1998 Toyota Tacoma Cooling System Diagram
Diagnostic Trouble Code Chart
HINT:
Factors such as instrument type may cause readings to differ slightly from stated values. If any DTCs are displayed during a check mode DTC check, check the circuit for the DTCs listed in the table below. For details of each DTC, refer to the page indicated.
*: MIL flashes when a catalyst damaged misfire is detected.
| DTC No. | Detection Item | Trouble Areas | MIL | Memory | See page |
| P0010 | Camshaft Position "A" Actuator Circuit (Bank 1) | - Open or short in OCV (bank 1) circuit - ECM | Comes on | DTC stored | ES-66 |
| P0011 | Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1) | - Valve timing - Oil control valve (OCV) - OCV filter - Camshaft timing gear assembly - ECM | Comes on | DTC stored | ES-71 |
| P0012 | Camshaft Position "A" - Timing Over-Retarded (Bank 1) | - Same as DTC P0011 | Comes on | DTC stored | ES-71 |
| P0016 | Crankshaft Position -Camshaft Position Correlation (Bank 1 Sensor A) | - Mechanical system (Timing chain has jumped tooth or chain stretched) - ECM | Comes on | DTC stored | ES-76 |
| P0018 | Crankshaft Position -Camshaft Position Correlation (Bank 2 Sensor A) | - Same as DTC P0016 | Comes on | DTC stored | ES-76 |
| P0020 | Camshaft Position "A" Actuator Circuit (Bank 2) | - Open or short in OCV (bank 2) circuit - ECM | Comes on | DTC stored | ES-66 |
| P0021 | Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 2) | - Same as DTC P0011 | Comes on | DTC stored | ES-71 |
| P0022 | Camshaft Position "A" - Timing Over-Retarded (Bank 2) | - Same as DTC P0011 | Comes on | DTC stored | ES-71 |
| P0031 | Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 1 Sensor 1) | - Open in A/F sensor heater circuit - A/F sensor heater - A/F sensor heater relay - ECM | Comes on | DTC stored | ES-78 |
| P0032 | Oxygen (A/F) Sensor Heater Control Circuit High (Bank 1 Sensor 1) | - Short in A/F sensor heater circuit - A/F sensor heater - A/F sensor heater relay - ECM | Comes on | DTC stored | ES-78 |
| P0037 | Oxygen Sensor Heater Control Circuit Low (Bank 1 Sensor 2) | - Open in HO2 sensor heater circuit - HO2 sensor heater - EFI relay - ECM | Comes on | DTC stored | ES-83 |
| DTC No. | Detection Item | Trouble Areas | MIL | Memory | See page |
| P0038 | Oxygen Sensor Heater Control Circuit High (Bank 1 Sensor 2) | - Short in HO2 sensor heater circuit - HO2 sensor heater - EFI relay - ECM | Comes on | DTC stored | ES-83 |
| P0051 | Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 2 Sensor 1) | - Same as DTC P0031 | Comes on | DTC stored | ES-78 |
| P0052 | Oxygen (A/F) Sensor Heater Control Circuit High (Bank 2 Sensor 1) | - Same as DTC P0032 | Comes on | DTC stored | ES-78 |
| P0057 | Oxygen Sensor Heater Control Circuit Low (Bank 2 Sensor 2) | - Same as DTC P0037 | Comes on | DTC stored | ES-83 |
| P0058 | Oxygen Sensor Heater Control Circuit High (Bank 2 Sensor 2) | - Same as DTC P0038 | Comes on | DTC stored | ES-83 |
| P0100 | Mass or Volume Air Flow Circuit | - Open or short in MAF meter circuit - MAF meter - ECM | Comes on | DTC stored | ES-89 |
| P0101 | Mass or Volume Air Flow Circuit Range / Performance Problem | - MAF meter | Comes on | DTC stored | ES-96 |
| P0102 | Mass or Volume Air Flow Circuit Low Input | - Open in MAF meter circuit - Short in ground circuit - MAF meter - ECM | Comes on | DTC stored | ES-89 |
| P0103 | Mass or Volume Air Flow Circuit High Input | - Short in MAF meter circuit (+B circuit) - MAF meter - ECM | Comes on | DTC stored | ES-89 |
| Temperature Circuit | - Open or short in IAT sensor circuit - IAT sensor (built into MAF meter) - ECM | Comes on | DTC stored | ES-98 | |
| Temperature Circuit Low Input | - Short in IAT sensor circuit - IAT sensor (built into MAF meter) - ECM | Comes on | DTC stored | ES-98 | |
| Temperature Circuit High Input | - Open in IAT sensor circuit - IAT sensor (built into MAF meter) - ECM | Comes on | DTC stored | ES-98 | |
| P0115 | Engine Coolant Temperature Circuit | - Open or short in ECT sensor circuit - ECT sensor - ECM | Comes on | DTC stored | ES-104 |
| P0116 | Engine Coolant Temperature Circuit Range / Performance Problem | - ECT sensor | Comes on | DTC stored | ES-109 |
| DTC No. | Detection Item | Trouble Areas | MIL | Memory | See page |
| P0117 | Engine Coolant Temperature Circuit Low Input | - Short in ECT sensor circuit - ECT sensor - ECM | Comes on | DTC stored | ES-104 |
| P0118 | Engine Coolant Temperature Circuit High Input | - Open in ECT sensor circuit - ECT sensor - ECM | Comes on | DTC stored | ES-104 |
| P0120 | Throttle / Pedal Position Sensor / Switch "A" Circuit | - Throttle Position (TP) sensor (built into throttle body) - ECM | Comes on | DTC stored | ES-112 |
| P0121 | Throttle / Pedal Position Sensor / Switch "A" Circuit Range / Performance Problem | - TP sensor (built into throttle body) | Comes on | DTC stored | ES-120 |
| P0122 | Throttle / Pedal Position Sensor / Switch "A" Circuit Low Input | - TP sensor (built into throttle body) - Short in VTA1 circuit - Open in VC circuit - ECM | Comes on | DTC stored | ES-112 |
| P0123 | Throttle / Pedal Position Sensor / Switch "A" Circuit High Input | - TP sensor (built into throttle body) - Open in VTA1 circuit - Open in E2 circuit - Short between VC and VTA1 circuits - ECM | Comes on | DTC stored | ES-112 |
| P0125 | Insufficient Coolant Temperature for Closed Loop Fuel Control | - Cooling system - Engine coolant temperature sensor - Thermostat | Comes on | DTC stored | ES-122 |
| P0128 | Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) | - Thermostat - Cooling system - ECT sensor - ECM | Comes on | DTC stored | ES-125 |
| P0136 | Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2) | - Open or short in HO2 sensor (bank 1, 2 sensor 2) circuit - HO2 sensor heater (bank 1, 2 sensor 2) - Air-Fuel Ratio (A/F) sensor (bank 1, 2 sensor 1) - EFI relay - Gas leakage from exhaust system | Comes on | DTC stored | ES-128 |
| P0137 | Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 2) | - Open in HO2 sensor (bank 1, 2 sensor 2) circuit - HO2 sensor heater (bank 1, 2 sensor 2) - EFI relay - Gas leakage from exhaust system | Comes on | DTC stored | ES-128 |
| DTC No. | Detection Item | Trouble Areas | MIL | Memory | See page |
| P0138 | Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2) | - Short in HO2 sensor (bank 1, 2 sensor 2) circuit - ECM internal circuit malfunction | Comes on | DTC stored | ES-128 |
| P0156 | Oxygen Sensor Circuit Malfunction (Bank 2 Sensor 2) | - Same as DTC P0136 | Comes on | DTC stored | ES-128 |
| P0157 | Oxygen Sensor Circuit Low Voltage (Bank 2 Sensor 2) | - Same as DTC P0137 | Comes on | DTC stored | ES-128 |
| P0158 | Oxygen Sensor Circuit High Voltage (Bank 2 Sensor 2) | - Same as DTC P0138 | Comes on | DTC stored | ES-128 |
| P0171 | System Too Lean (Bank 1) | - Air induction system - Injector blockage - Mass Air Flow (MAF) meter - Engine Coolant Temperature (ECT) sensor - Fuel pressure - Gas leakage from exhaust system - Open or short in A/F sensor (bank 1, 2 sensor 1) circuit - A/F sensor heater relay - A/F sensor heater and A/F sensor heater relay circuits - PCV hose connections - PCV valve and hose - ECM | Comes on | DTC stored | ES-146 |
| P0172 | System Too Rich (Bank 1) | - Injector leakage or blockage - MAF meter - ECT sensor - Ignition system - Fuel pressure - Gas leakage from exhaust system - Open or short in A/F sensor (bank 1, 2 sensor 1) circuit - A/F sensor heater relay - A/F sensor heater and A/F sensor heater relay circuits - ECM | Comes on | DTC stored | ES-146 |
| P0174 | System Too Lean (Bank 2) | - Same as DTC P0171 | Comes on | DTC stored | ES-146 |
| DTC No. | Detection Item | Trouble Areas | MIL | Memory | See page |
| P0175 | System Too Rich (Bank 2) | - Same as DTC P0172 | Comes on | DTC stored | ES-146 |
| P0220 | Throttle / Pedal Position Sensor / Switch "B" Circuit | - TP sensor (built into throttle body) - ECM | Comes on | DTC stored | ES-112 |
| P0222 | Throttle / Pedal Position Sensor / Switch "B" Circuit Low Input | - TP sensor (built into throttle body) - Short in VTA2 circuit - Open in VC circuit - ECM | Comes on | DTC stored | ES-112 |
| P0223 | Throttle / Pedal Position Sensor / Switch "B" Circuit High Input | - TP sensor (built into throttle body) - Open in VTA2 circuit - Open in E2 circuit - Short between VC and VTA2 circuits - ECM | Comes on | DTC stored | ES-112 |
| P0230 | Fuel Pump Primary Circuit | - Open or short in fuel pump relay circuit - Fuel pump relay - ECM | - | DTC stored | ES-158 |
| P0300 | Random / Multiple Cylinder Misfire Detected | - Open or short in engine wire harness - Connector connection - Vacuum hose connection - Ignition system - Injector - Fuel pressure - Mass Air Flow (MAF) meter - Engine Coolant Temperature (ECT) sensor - Compression pressure - Valve clearance - Valve timing - PCV hose connections - PCV valve and hose - ECM | Comes on/ Blinks | DTC stored | ES-163 |
| P0301 | Cylinder 1 Misfire Detected | - Same as DTC P0300 | Comes on/ Blinks | DTC stored | ES-163 |
| P0302 | Cylinder 2 Misfire Detected | - Same as DTC P0300 | Comes on/ Blinks | DTC stored | ES-163 |
| P0303 | Cylinder 3 Misfire Detected | - Same as DTC P0300 | Comes on/ Blinks | DTC stored | ES-163 |
| P0304 | Cylinder 4 Misfire Detected | - Same as DTC P0300 | Comes on/ Blinks | DTC stored | ES-163 |
| P0305 | Cylinder 5 Misfire Detected | - Same as DTC P0300 | Comes on/ Blinks | DTC stored | ES-163 |
| P0306 | Cylinder 6 Misfire Detected | - Same as DTC P0300 | Comes on/ Blinks | DTC stored | ES-163 |
| P0327 | Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor) | - Short in knock sensor 1 or 2 circuit - Knock sensor 1 or 2 - ECM | Comes on | DTC stored | ES-176 |
| P0328 | Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor) | - Open in knock sensor 1 or 2 circuit - Knock sensor 1 or 2 - ECM | Comes on | DTC stored | ES-176 |
| DTC No. | Detection Item | Trouble Areas | MIL | Memory | See page |
| P0332 | Knock Sensor 2 Circuit Low Input (Bank 2) | - Same as DTC P0327 | Comes on | DTC stored | ES-176 |
| P0333 | Knock Sensor 2 Circuit High Input (Bank 2) | - Same as DTC P0328 | Comes on | DTC stored | ES-176 |
| P0335 | Crankshaft Position Sensor "A" Circuit | - Open or short in CKP sensor circuit - CKP sensor - Sensor plate (CKP sensor plate) - ECM | Comes on | DTC stored | ES-182 |
| P0339 | Crankshaft Position Sensor "A" Circuit Intermittent | - Same as DTC P0335 | - | DTC stored | ES-182 |
| P0340 | Camshaft Position Sensor "A" Circuit (Bank 1 or Single Sensor) | - Open or short in VVT sensor circuit - VVT sensor - Camshaft timing pulley - Jumped tooth of timing chain - ECM | Comes on | DTC stored | ES-187 |
| P0342 | Camshaft Position Sensor "A" Circuit Low Input (Bank 1 or Single Sensor) | - Same as DTC P0340 | Comes on | DTC stored | ES-187 |
| P0343 | Camshaft Position Sensor "A" Circuit High Input (Bank 1 or Single Sensor) | - Same as DTC P0340 | Comes on | DTC stored | ES-187 |
| P0345 | Camshaft Position Sensor "A" Circuit (Bank 2) | - Same as DTC P0340 | Comes on | DTC stored | ES-187 |
| P0347 | Camshaft Position Sensor "A" Circuit Low Input (Bank 2) | - Same as DTC P0340 | Comes on | DTC stored | ES-187 |
| P0348 | Camshaft Position Sensor "A" Circuit High Input (Bank 2) | - Same as DTC P0340 | Comes on | DTC stored | ES-187 |
| P0351 | Ignition Coil "A" Primary / Secondary Circuit | - Ignition system - Open or short in IGF1 or IGT circuit (1 to 6) between ignition coil with igniter and ECM - No. 1 to No. 6 ignition coils with igniters - ECM | Comes on | DTC stored | ES-192 |
| P0352 | Ignition Coil "B" Primary / Secondary Circuit | - Same as DTC P0351 | Comes on | DTC stored | ES-192 |
| P0353 | Ignition Coil "C" Primary / Secondary Circuit | - Same as DTC P0351 | Comes on | DTC stored | ES-192 |
| P0354 | Ignition Coil "D" Primary / Secondary Circuit | - Same as DTC P0351 | Comes on | DTC stored | ES-192 |
| P0355 | Ignition Coil "E" Primary / Secondary Circuit | - Same as DTC P0351 | Comes on | DTC stored | ES-192 |
| DTC No. | Detection Item | Trouble Areas | MIL | Memory | See page |
| P0356 | Ignition Coil "F" Primary / Secondary Circuit | - Same as DTC P0351 | Comes on | DTC stored | ES-192 |
| P0420 | Catalyst System Efficiency Below Threshold (Bank 1) | - Gas leakage from exhaust system - HO2 sensor (bank 1 sensor 2) - Exhaust manifold (TWC) | Comes on | DTC stored | ES-203 |
| P0430 | Catalyst System Efficiency Below Threshold (Bank 2) | - Gas leakage from exhaust system - HO2 sensor (bank 2 sensor 2) - Exhaust manifold (TWC) | Comes on | DTC stored | ES-203 |
| P043E | Evaporative Emission System Reference Orifice Clog Up | - Canister pump module - Connector/wire harness (Canister pump module - ECM) - ECM - Leakage from EVAP system | Comes on | DTC stored | ES-210 |
| P043F | Evaporative Emission System Reference Orifice High Flow | - Canister pump module - Connector/wire harness (Canister pump module - ECM) - ECM Leakage from EVAP system | Comes on | DTC stored | ES-210 |
| P0441 | Evaporative Emission Control System Incorrect Purge Flow | - Purge VSV - Connector/wire harness (Purge VSV - ECM - Canister pump medule - Leakage from EVAP system - Leakage from EVAP line (Purge VSV -Intake manifold) | Comes on | DTC stored | ES-216 |
| P0450 | Evaporative Emission Control System Pressure Sensor / Switch | - Canister pump module - ECM | Comes on | DTC stored | ES-223 |
| P0451 | Evaporative Emission Control System Pressure Sensor Range / Performance | - Canister pump module - Connector/wire harness (Canister pump module - ECM) - ECM | Comes on | DTC stored | ES-223 |
| P0452 | Evaporative Emission Control System Pressure Sensor / Switch Low Input | - Canister pump module - Connector/wire harness (Canister pump module - ECM) - ECM | Comes on | DTC stored | ES-223 |
| DTC No. | Detection Item | Trouble Areas | MIL | Memory | See page |
| P0453 | Evaporative Emission Control System Pressure Sensor / Switch High Input | - Canister pump module - Connector/wire harness (Canister pump module - ECM) - ECM | Comes on | DTC stored | ES-223 |
| P0455 | Evaporative Emission Control System Leak Detected (Gross Leak) | - Leakage from EVAP line (Canister - Fuel tank) - Leakage from EVAP line (Purge VSV -Canister) - Canister pump module - Leakage from fuel tank - Leakage from canister | Comes on | DTC stored | ES-233 |
| P0456 | Evaporative Emission Control System Leak Detected (Very Small Leak) | - Same as DTC P0455 | Comes on | DTC stored | ES-233 |
| P0500 | Vehicle Speed Sensor "A" | - Open or short in speed signal circuit - Combination meter - ECM - Skid control ECU | Comes on | DTC stored | ES-238 |
| P0504 | Brake Switch "A" / "B" Correlation | - Short in stop light switch signal circuit - STOP fuse - Stop light switch - ECM | - | DTC stored | ES-242 |
| P0505 | Idle Control System Malfunction | - ETCS - Air induction system - PCV hose connections - ECM | Comes on | DTC stored | ES-246 |
| P050A | Cold Start Idle Air Control System Performance | - Throttle body assembly - Mass air flow meter - Air induction system - PCV hose connections - VVT system - Air cleaner filter element - ECM | Comes on | DTC stored | ES-250 |
| P050B | Cold Start Ignition Timing Performance | - Same as DTC P050A | Comes on | DTC stored | ES-250 |
| P0560 | System Voltage | - Open in back up power source circuit - EFI fuse - ECM | Comes on | DTC stored | ES-257 |
| P0604 | Internal Control Module Random Access Memory (RAM) Error | - ECM | Comes on | DTC stored | ES-261 |
| P0606 | ECM/PCM Processor | - ECM | Comes on | DTC stored | ES-261 |
| P0607 | Control Module Performance | - ECM | Comes on | DTC stored | ES-261 |
| DTC No. | Detection Item | Trouble Areas | MIL | Memory | See page |
| P0617 | Starter Relay Circuit High | - Park/Neutral Position (PNP) switch (For automatic transmission) - Clutch start switch (For manual transmission) - Starter relay circuit - Ignition switch - ECM | Comes on | DTC stored | ES-263 |
| P0630 | VIN not Programmed or Mismatch - ECM / PCM | - ECM | Comes on | DTC stored | ES-270 |
| P0657 | Actuator Supply Voltage Circuit / Open | - ECM | Comes on | DTC stored | ES-261 |
| P0724 | Brake Switch "B" Circuit High | - Short in stop light switch signal circuit - Stop light switch - ECM | Comes on | DTC stored | ES-272 |
| P1500 | AC Inverter Malfunction | - Open or short in speed signal circuit - Short between idle-up signal and +B circuits - Voltage Inverter - ECM | Comes on | DTC stored | ES-275 |
| P2102 | Throttle Actuator Control Motor Circuit Low | - Open in throttle actuator circuit - Throttle actuator - ECM | Comes on | DTC stored | ES-279 |
| P2103 | Throttle Actuator Control Motor Circuit High | - Short in throttle actuator circuit - Throttle actuator - Throttle valve - Throttle body assembly - ECM | Comes on | DTC stored | ES-279 |
| P2111 | Throttle Actuator Control System -Stuck Open | - Throttle actuator - Throttle body assembly - Throttle valve | Comes on | DTC stored | ES-283 |
| P2112 | Throttle Actuator Control System -Stuck Closed | - Same as DTC P2111 | Comes on | DTC stored | ES-283 |
| P2118 | Throttle Actuator Control Motor Current Range / Performance | - Open in ETCS power source circuit - ETCS fuse - ECM | Comes on | DTC stored | ES-286 |
| P2119 | Throttle Actuator Control Throttle Body Range / Performance | - ETCS - ECM | Comes on | DTC stored | ES-290 |
| P2120 | Throttle / Pedal Position Sensor / Switch "D" Circuit | - Accelerator Pedal Position (APP) sensor - ECM | Comes on | DTC stored | ES-293 |
| P2121 | Throttle / Pedal Position Sensor / Switch "D" Circuit Range / Performance | - Accelerator position sensor - ECM | Comes on | DTC stored | ES-301 |
| DTC No. | Detection Item | Trouble Areas | MIL | Memory | See page |
| P2122 | Throttle / Pedal Position Sensor / Switch "D" Circuit Low Input | - APP sensor - Open in VCP1 circuit - Open or ground short in VPA circuit - ECM | Comes on | DTC stored | ES-293 |
| P2123 | Throttle / Pedal Position Sensor / Switch "D" Circuit High Input | - APP sensor - Open in EPA circuit - ECM | Comes on | DTC stored | ES-293 |
| P2125 | Throttle / Pedal Position Sensor / Switch "E" Circuit | - APP sensor - ECM | Comes on | DTC stored | ES-293 |
| P2127 | Throttle / Pedal Position Sensor / Switch "E" Circuit Low Input | - APP sensor - Open in VCP2 circuit - Open or ground short in VPA2 circuit - ECM | Comes on | DTC stored | ES-293 |
| P2128 | Throttle / Pedal Position Sensor / Switch "E" Circuit High Input | - APP sensor - Open in EPA2 circuit - ECM | Comes on | DTC stored | ES-293 |
| P2135 | Throttle / Pedal Position Sensor / Switch "A" / "B" Voltage Correlation | - Short between VTA1 and VTA2 circuits - TP sensor (built into throttle body) - ECM | Comes on | DTC stored | ES-112 |
| P2138 | Throttle / Pedal Position Sensor / Switch "D" / "E" Voltage Correlation | - Short between VPA and VPA2 circuits - APP sensor - ECM | Comes on | DTC stored | ES-293 |
| P2195 | Oxygen (A/F) Sensor Signal Stuck Lean (Bank 1 Sensor 1) | - Open or short in A/F sensor (bank 1, 2 sensor 1) circuit - A/F sensor heater relay - A/F sensor heater and relay circuits - Air induction system - Fuel pressure - Injector - ECM | Comes on | DTC stored | ES-304 |
| P2196 | Oxygen (A/F) Sensor Signal Stuck Rich (Bank 1 Sensor 1) | - Same as DTC P2195 | Comes on | DTC stored | ES-304 |
| P2197 | Oxygen (A/F) Sensor Signal Stuck Lean (Bank 2 Sensor 1) | - Same as DTC P2195 | Comes on | DTC stored | ES-304 |
| P2198 | Oxygen (A/F) Sensor Signal Stuck Rich (Bank 2 Sensor 1) | - Same as DTC P2195 | Comes on | DTC stored | ES-304 |
| DTC No. | Detection Item | Trouble Areas | MIL | Memory | See page |
| P2238 | Oxygen (A/F) Sensor Pumping Current Circuit Low (Bank 1 Sensor 1) | - Open or short in A/F sensor (bank 1, 2 sensor 1) circuit - A/F sensor heater - A/F sensor heater relay - A/F sensor heater and relay circuits - ECM | Comes on | DTC stored | ES-322 |
| P2239 | Oxygen (A/F) Sensor Pumping Current Circuit High (Bank 1 Sensor 1) | - Same as DTC P2238 | Comes on | DTC stored | ES-322 |
| P2241 | Oxygen (A/F) Sensor Pumping Current Circuit Low (Bank 2 Sensor 1) | - Same as DTC P2238 | Comes on | DTC stored | ES-322 |
| P2242 | Oxygen (A/F) Sensor Pumping Current Circuit High (Bank 2 Sensor 1) | - Same as DTC P2238 | Comes on | DTC stored | ES-322 |
| P2252 | Oxygen (A/F) Sensor Reference Ground Circuit Low (Bank 1 Sensor 1) | - Same as DTC P2238 | Comes on | DTC stored | ES-322 |
| P2253 | Oxygen (A/F) Sensor Reference Ground Circuit High (Bank 1 Sensor 1) | - Same as DTC P2238 | Comes on | DTC stored | ES-322 |
| P2255 | Oxygen (A/F) Sensor Reference Ground Circuit Low (Bank 2 Sensor 1) | - Same as DTC P2241 | Comes on | DTC stored | ES-322 |
| P2256 | Oxygen (A/F) Sensor Reference Ground Circuit High (Bank 2 Sensor 1) | - Same as DTC P2241 | Comes on | DTC stored | ES-322 |
| P2401 | Evaporative Emission System Leak Detection Pump Control Circuit Low | - Canister pump module - Connector/wire harness (Canister pump module - ECM) - ECM - Leakage from EVAP system | Comes on | DTC stored | ES-328 |
| P2402 | Evaporative Emission System Leak Detection Pump Control Circuit High | - Canister pump module - Connector/wire harness (Canister pump module - ECM) - ECM | Comes on | DTC stored | ES-328 |
| P2419 | Evaporative Emission System Switching Valve Control Circuit Low | - Canister pump module - Connector/wire harness (Canister pump module - ECM) - ECM | Comes on | DTC stored | ES-334 |
| DTC No. | Detection Item | Trouble Areas | MIL | Memory | See page |
| P2420 | Evaporative Emission System Switching Valve Control Circuit High | - Canister pump module - Connector/wire harness (Canister pump module - ECM) - ECM - Leakage from EVAP system | Comes on | DTC stored | ES-334 |
| P2610 | ECM / PCM Internal Engine Off Timer Performance | - ECM | Comes on | DTC stored | ES-340 |
| P2A00 | A/F Sensor Circuit Slow Response (Bank 1 Sensor 1) | - Open or short in A/F sensor (bank 1, 2 sensor 1) circuit - A/F sensor - ECM | Comes on | DTC stored | ES-342 |
| P2A03 | A/F Sensor Circuit Slow Response (Bank 2 Sensor 1) | - Same as DTC P2A00 | Comes on | DTC stored | ES-342 |
Continue reading here: Definition Of Terms
Was this article helpful?
Posted by: emikorifkin.blogspot.com
Source: https://www.toyotaguru.us/tacoma-pickup-truck-repair/diagnostic-trouble-code-chart.html