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There are several ways to clear ECU error codes.
- Scan Tool
If using a scan tool, follow tool manufacturer’s instructions to clear Codes.
- Manual Method
Here is a quick way to reset your ECU. It is also known to clear codes thrown, and turn off the "Service Engine Soon" Light.
Confirm that accelerator pedal is fully released, turn ignition switch “ON” and wait 3 seconds.
Repeat the following two procedures quickly five times within 5 seconds:
Fully depress the accelerator pedal (HARD).
Fully release the accelerator pedal.
Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the CEL starts blinking.
Fully release the accelerator pedal (while the CEL is still blinking)
Wait about 10 seconds.
Fully depress the accelerator pedal and keep it for more than 10 seconds.
Fully release the accelerator pedal (The CEL light will continue to blink).
Turn ignition switch to “OFF” position and now you can start the car. The CEL light should be gone.
- With Consult
Turn ignition Off.
Connect Consult’the data link connector (DLC), located behind fuse box cover.
Turn ignition On.
Touch Start.
Touch Engine.
Perform each diagnostic test mode according to each service procedure.
- Without Consult
Turn ignition On.
Turn diagnostic mode selector on ECU fully clockwise and wait until inspection lamps flash. #Number of flashes displayed indicates corresponding mode.
Note number of flashes, then immediately turn diagnostic mode selector fully counterclockwise.
If ignition is turned Off during diagnosis, in each mode, and then turned back on again after power to the ECU has dropped off completely, diagnosis will automatically return to Mode I.
For description of modes, proceed as follows:
(Mode I): with engine stopped, system in bulb check state. with engine running, system in malfunction warning state.
(Mode II): with engine stopped, system in self diagnostic results state. with engine running, system in front O2S monitor state.
- Codes
P0000 No Self Diagnostic Failure Indicated
P0011 Intake Valve Timing Control
P0021 Intake Valve Timing Control
P0031 O2 Sensor Heather
P0032 O2 Sensor Heather
P0037 O2 Sensor Heather
P0038 O2 Sensor Heather
P0043 O2 Sensor Heather
P0044 O2 Sensor Heather
P0051 O2 Sensor Heather
P0052 O2 Sensor Heather
P0057 O2 Sensor Heather
P0058 O2 Sensor Heather
P0100 MAF (Mass Air Flow) Sensor
P0101 MAF Sensor
P0102 MAF Sensor
P0103 MAF Sensor
P0105 Absolute Pressure Sensor
P0107 Absolute Pressure Sensor
P0108 Absolute Pressure Sensor
P0110 IAT (Intake Air Temperature) Sensor
P0112 IAT Sensor
P0113 IAT Sensor
P0115 ECT (Engine Coolant Temperature) Sensor
P0117 ECT Sensor
P0118 ECT Sensor
P0120 TP (Throttle Position) Sensor
P0121 TP Sensor
P0122 TP Sensor
P0123 TP Sensor
P0125 ECT Sensor
P0127 Intake Air Temperature Sensor
P0128 Thermostat Function
P0130 Closed Loop, Bank 1 Or Front O2S, Bank 1
P0131 Front O2 Sensor, Bank 1 Lean Shift Monitoring
P0132 Front O2 Sensor, Bank 1 Rich Shift Monitoring
P0133 Front O2 Sensor, Bank 1 Response Monitoring
P0134 Front O2 Sensor, Bank 1 High Voltage
P0135 Front HO2S Heater, Bank 1
P0136 Rear O2S, Bank 1
P0137 Rear O2S, Bank 1 Minimum Voltage Monitoring
P0138 Rear O2S, Bank 1 Maximum Voltage Monitoring
P0139 Rear O2S, Bank 1 Response Monitoring
P0140 Rear O2S, Bank 1 High Voltage
P0141 Rear H02S Heater, Bank 1
P0144 O2 Sensor Heather
P0150 Closed Loop, Bank 2 Or Front O2S, Bank 2
P0151 Front O2 Sensor, Bank 2 Lean Shift Monitoring
P0152 Front O2 Sensor, Bank 2 Rich Shift Monitoring
P0153 Front O2 Sensor, Bank 2 Response Monitoring
P0154 Front O2 Sensor, Bank 2 High Voltage
P0155 Front HO2S Heater, Bank 2
P0156 Rear H02S Sensor, LH Bank
P0157 Rear O2S, Bank 2
P0158 Rear O2S, Bank 2
P0159 Rear O2S, Bank 2
P0160 Rear O2S, Bank 2
P0161 Rear H02S Heater, LH Bank Or Bank 2
P0171 Fuel System Lean, Bank 1
P0172 Fuel System Rich, Bank 1
P0174 Fuel System Lean, Bank 2
P0175 Fuel System Rich, Bank 2
P0180 Tank Fuel Temp Sensor
P0182 Fuel Tank Temperature Sensor
P0183 Fuel Tank Temperature Sensor
P0217 Engine Coolant High Temperature Enrichment Protection
P0221 Throttle Position Sensor
P0222 Throttle Position Sensor
P0223 Throttle Position Sensor
P0226 Accelerator Pedal Position Sensor
P0227 Accelerator Pedal Position Sensor
P0228 Accelerator Pedal Position Sensor
P0245 Supercharger Bypass Valve Control Solenoid Valve
P0300 Random Misfire
P0301–*P0308 Misfire, Cylinder No. 1–8
P0325 Knock Sensor, Bank 1
P0327 Knock Sensor
P0328 Knock Sensor
P0330 Knock Sensor, Bank 2
P0335 CKP (Crank Shaft Position) Sensor
P0340 CMP (Cam Shaft Position) Sensor (Phase)
P0345 CMP Sensor (Phase)
P0350 Ignition Signal
P0400 EGR System
P0402 EGRC/BPT Valve
P0403 EGR Volume Control Valve Circuit
P0405 EGR Temperature Sensor
P0406 EGR Temperature Sensor
P0420 TW (Two-Way) Catalyst System, Bank 1
P0430 TW Catalyst System, Bank 2
P0440 EVAP Small Leak
P0441 EVAP Control System Purge Flow Monitor
P0442 EVAP Control System
P0443 Purge Control/V & S/V
P0444 EVAP Canister Purge Volume Control Solenoid Valve
P0445 EVAP Canister Purge Volume Control Solenoid Valve
P0447 EVAP Canister Vent Control Valve
P0450 EVAP Pressure Sensor
P0451 EVAP System Pressure Sensor
P0452 EVAP System Pressure Sensor
P0453 EVAP System Pressure Sensor
P0455 EVAP Control System
P0456 EVAP Control System
P0460 Fuel Level Sensor Unit (Slow)
P0461 Fuel Level Sensor Function
P0462 Fuel Level Sensor
P0463 Fuel Level Sensor
P0464 Fuel Level Sensor Circuit
P0500 Vehicle Speed Sensor
P0505 IACV/AAC Valve
P0506 Idle Speed Control System
P0507 Idle Speed Control System
P0510 Closed TP Sensor
P0550 Power Steering Pressure Sensor
P0600 A/T Comm Line
P0605 ECM/ECU
P0650 Malfunction Indicator Lamp
P0705 PNP Or Inhibitor Switch
P0710 ATF Temp Sensor
P0720 VSS A/T
P0725 Engine Speed Signal
P0731 A/T 1ST Signal
P0732 A/T 2ND Signal
P0733 A/T 3RD Signal
P0734 A/T 4TH Signal Or TCC
P0740 TCC SV Solenoid
P0744 A/T TCC Signal
P0745 Line Pressure S/V
P0750 Shift Solenoid/V A
P0755 Shift Solenoid/V B
P1031 Air/Fuel Ratio Sensor Meter
P1032 Air/Fuel Ratio Sensor Meter
P1065 ECM Power Supply Heater
P1102 Mass Air Flow Sensor Function Heater
P1103 MAP Sensor Heater
P1104 MAP Sensor Heater
P1105 MAP/BARO Switch SOL/V
P1108 MAP Sensor Heater
P1110 Intake Valve Timing Control, LH Bank
P1111 Intake Valve Timing Control Solenoid Valve
P1119 Radiator Temperature Sensor Circuit
P1120 TP Sensor 2
P1121 Electronic Throttle Control Actuator
P1122 Electronic Throttle Control Actuator
P1124 Throttle Control Motor Relay
P1125 Tandem TP Sensor
P1126 Throttle Control Motor Relay
P1128 Throttle Control Motor
P1130 Swirl Control Valve Control Solenoid Valve
P1131 Swirl Control Solenoid Valve
P1132 Swirl Control Valve
P1135 Intake Valve Timing Control, RH Bank 2
P1136 Intake Valve Timing Control Solenoid Valve
P1137 Swirl Control Valve Position Sensor
P1138 Swirl Control Valve
P1140 Intake Valve Timing Control Position Sensor, LH Bank 1
P1143 Heated O2 Sensor 1
P1144 Heated O2 Sensor 1
P1145 Intake Valve Timing Control Position Sensor, RH Bank 2
P1146 Heated O2 Sensor 2
P1147 Heated O2 Sensor 2
P1148 Closed Loop, Bank 1
P1163 Heated O2 Sensor 1
P1164 Heated O2 Sensor 1
P1165 Swirl Control Valve Control Vacuum Check Switch
P1166 Heated O2 Sensor 2
P1167 Heated O2 Sensor 2
P1168 Closed Loop, Bank 2
P1169 Heated O2 Sensor 3
P1170 Heated O2 Sensor 3
P1210 Traction Control Signal Circuit
P1211 ABS/TCS Control Unit
P1212 ABS/TCS Communication Line
P1217 Engine Coolant Temperature
P1220 FPCM
P1221 Throttle Actuator Circuit
P1222 Temperature Sensor Circuit
P1223 Throttle Position Sensor 2
P1224 Throttle Position Sensor 2
P1225 Closed Throttle Position Learning
P1226 Closed Throttle Position Learning
P1227 Accelerator Pedal Position Sensor 2
P1228 Accelerator Pedal Position Sensor 2
P1229 Sensor Power Supply
P1271 Air/Fuel Ratio Sensor 1
P1272 Air/Fuel Ratio Sensor 1
P1273 Air/Fuel Ratio Sensor 1
P1274 Air/Fuel Ratio Sensor 1
P1276 Air/Fuel Ratio Sensor 1
P1278 Air/Fuel Ratio Sensor 1
P1279 Air/Fuel Ratio Sensor 1
P1320 Ignition Signal, Primary
P1335 CKP Sensor (Ref)
P1336 CKP Sensor (POS) Cog
P1400 EGRC Solenoid/V
P1401 EGR Temp Sensor
P1402 EGR System
P1440 EVAP Small Leak
P1441 VC/V Bypass/V
P1443 Canister Control Vacuum Check Switch
P1444 Purge Volume Control/V
P1445 Purge Volume Control/V
P1446 Vent Control Valve
P1447 EVAP Purge Flow
P1448 Vent Control Valve
P1456 EVAP Control System
P1464 Fuel Level Sensor Circuit Ground Signal
P1480 Fan Control Solenoid Valve Circuit
P1490 VC/V Bypass/V
P1491 VC Cut/V Bypass/V
P1492 Purge Control/V S/V
P1493 Purge Control/V & S/V
P1564 ASCD Steering Switch
P1568 ICC (Intelligent Cruise Control)
P1572 ASCD (Automatic Sped Control Device) Brake Switch
P1574 ASCD Vehicle Speed Sensor
P1605 A/T Diag Comm Line
P1610 NATS Malfunction
P1611 NATS Malfunction
P1612 NATS Malfunction
P1613 NATS Malfunction
P1614 NATS Malfunction
P1615 NATS Malfunction
P1705 TP Sensor A/T
P1706 PNP Switch
P1720 Vehicle Speed Sensor- A/T Output
P1760 Overrun Clutch S/V
P1775 Torque Converter Clutch Solenoid Valve
P1776 Torque Converter Clutch Solenoid Valve
P1780 Shift Change Signal
P1800 VIAS Control Solenoid Valve
P1805 Brake switch
P1900 Cooling Fan
P2122 Accelerator Pedal Position Sensor
P2123 Accelerator Pedal Position Sensor
P2127 Accelerator Pedal Position Sensor 2
P2128 Accelerator Pedal Position Sensor 2
P2135 Throttle Position Sensor
P2138 Accelerator Pedal Position Sensor
- Scan Tool
If using a scan tool, follow tool manufacturer’s instructions to clear Codes.
- Manual Method
Here is a quick way to reset your ECU. It is also known to clear codes thrown, and turn off the "Service Engine Soon" Light.
Confirm that accelerator pedal is fully released, turn ignition switch “ON” and wait 3 seconds.
Repeat the following two procedures quickly five times within 5 seconds:
Fully depress the accelerator pedal (HARD).
Fully release the accelerator pedal.
Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the CEL starts blinking.
Fully release the accelerator pedal (while the CEL is still blinking)
Wait about 10 seconds.
Fully depress the accelerator pedal and keep it for more than 10 seconds.
Fully release the accelerator pedal (The CEL light will continue to blink).
Turn ignition switch to “OFF” position and now you can start the car. The CEL light should be gone.
- With Consult
Turn ignition Off.
Connect Consult’the data link connector (DLC), located behind fuse box cover.
Turn ignition On.
Touch Start.
Touch Engine.
Perform each diagnostic test mode according to each service procedure.
- Without Consult
Turn ignition On.
Turn diagnostic mode selector on ECU fully clockwise and wait until inspection lamps flash. #Number of flashes displayed indicates corresponding mode.
Note number of flashes, then immediately turn diagnostic mode selector fully counterclockwise.
If ignition is turned Off during diagnosis, in each mode, and then turned back on again after power to the ECU has dropped off completely, diagnosis will automatically return to Mode I.
For description of modes, proceed as follows:
(Mode I): with engine stopped, system in bulb check state. with engine running, system in malfunction warning state.
(Mode II): with engine stopped, system in self diagnostic results state. with engine running, system in front O2S monitor state.
- Codes
P0000 No Self Diagnostic Failure Indicated
P0011 Intake Valve Timing Control
P0021 Intake Valve Timing Control
P0031 O2 Sensor Heather
P0032 O2 Sensor Heather
P0037 O2 Sensor Heather
P0038 O2 Sensor Heather
P0043 O2 Sensor Heather
P0044 O2 Sensor Heather
P0051 O2 Sensor Heather
P0052 O2 Sensor Heather
P0057 O2 Sensor Heather
P0058 O2 Sensor Heather
P0100 MAF (Mass Air Flow) Sensor
P0101 MAF Sensor
P0102 MAF Sensor
P0103 MAF Sensor
P0105 Absolute Pressure Sensor
P0107 Absolute Pressure Sensor
P0108 Absolute Pressure Sensor
P0110 IAT (Intake Air Temperature) Sensor
P0112 IAT Sensor
P0113 IAT Sensor
P0115 ECT (Engine Coolant Temperature) Sensor
P0117 ECT Sensor
P0118 ECT Sensor
P0120 TP (Throttle Position) Sensor
P0121 TP Sensor
P0122 TP Sensor
P0123 TP Sensor
P0125 ECT Sensor
P0127 Intake Air Temperature Sensor
P0128 Thermostat Function
P0130 Closed Loop, Bank 1 Or Front O2S, Bank 1
P0131 Front O2 Sensor, Bank 1 Lean Shift Monitoring
P0132 Front O2 Sensor, Bank 1 Rich Shift Monitoring
P0133 Front O2 Sensor, Bank 1 Response Monitoring
P0134 Front O2 Sensor, Bank 1 High Voltage
P0135 Front HO2S Heater, Bank 1
P0136 Rear O2S, Bank 1
P0137 Rear O2S, Bank 1 Minimum Voltage Monitoring
P0138 Rear O2S, Bank 1 Maximum Voltage Monitoring
P0139 Rear O2S, Bank 1 Response Monitoring
P0140 Rear O2S, Bank 1 High Voltage
P0141 Rear H02S Heater, Bank 1
P0144 O2 Sensor Heather
P0150 Closed Loop, Bank 2 Or Front O2S, Bank 2
P0151 Front O2 Sensor, Bank 2 Lean Shift Monitoring
P0152 Front O2 Sensor, Bank 2 Rich Shift Monitoring
P0153 Front O2 Sensor, Bank 2 Response Monitoring
P0154 Front O2 Sensor, Bank 2 High Voltage
P0155 Front HO2S Heater, Bank 2
P0156 Rear H02S Sensor, LH Bank
P0157 Rear O2S, Bank 2
P0158 Rear O2S, Bank 2
P0159 Rear O2S, Bank 2
P0160 Rear O2S, Bank 2
P0161 Rear H02S Heater, LH Bank Or Bank 2
P0171 Fuel System Lean, Bank 1
P0172 Fuel System Rich, Bank 1
P0174 Fuel System Lean, Bank 2
P0175 Fuel System Rich, Bank 2
P0180 Tank Fuel Temp Sensor
P0182 Fuel Tank Temperature Sensor
P0183 Fuel Tank Temperature Sensor
P0217 Engine Coolant High Temperature Enrichment Protection
P0221 Throttle Position Sensor
P0222 Throttle Position Sensor
P0223 Throttle Position Sensor
P0226 Accelerator Pedal Position Sensor
P0227 Accelerator Pedal Position Sensor
P0228 Accelerator Pedal Position Sensor
P0245 Supercharger Bypass Valve Control Solenoid Valve
P0300 Random Misfire
P0301–*P0308 Misfire, Cylinder No. 1–8
P0325 Knock Sensor, Bank 1
P0327 Knock Sensor
P0328 Knock Sensor
P0330 Knock Sensor, Bank 2
P0335 CKP (Crank Shaft Position) Sensor
P0340 CMP (Cam Shaft Position) Sensor (Phase)
P0345 CMP Sensor (Phase)
P0350 Ignition Signal
P0400 EGR System
P0402 EGRC/BPT Valve
P0403 EGR Volume Control Valve Circuit
P0405 EGR Temperature Sensor
P0406 EGR Temperature Sensor
P0420 TW (Two-Way) Catalyst System, Bank 1
P0430 TW Catalyst System, Bank 2
P0440 EVAP Small Leak
P0441 EVAP Control System Purge Flow Monitor
P0442 EVAP Control System
P0443 Purge Control/V & S/V
P0444 EVAP Canister Purge Volume Control Solenoid Valve
P0445 EVAP Canister Purge Volume Control Solenoid Valve
P0447 EVAP Canister Vent Control Valve
P0450 EVAP Pressure Sensor
P0451 EVAP System Pressure Sensor
P0452 EVAP System Pressure Sensor
P0453 EVAP System Pressure Sensor
P0455 EVAP Control System
P0456 EVAP Control System
P0460 Fuel Level Sensor Unit (Slow)
P0461 Fuel Level Sensor Function
P0462 Fuel Level Sensor
P0463 Fuel Level Sensor
P0464 Fuel Level Sensor Circuit
P0500 Vehicle Speed Sensor
P0505 IACV/AAC Valve
P0506 Idle Speed Control System
P0507 Idle Speed Control System
P0510 Closed TP Sensor
P0550 Power Steering Pressure Sensor
P0600 A/T Comm Line
P0605 ECM/ECU
P0650 Malfunction Indicator Lamp
P0705 PNP Or Inhibitor Switch
P0710 ATF Temp Sensor
P0720 VSS A/T
P0725 Engine Speed Signal
P0731 A/T 1ST Signal
P0732 A/T 2ND Signal
P0733 A/T 3RD Signal
P0734 A/T 4TH Signal Or TCC
P0740 TCC SV Solenoid
P0744 A/T TCC Signal
P0745 Line Pressure S/V
P0750 Shift Solenoid/V A
P0755 Shift Solenoid/V B
P1031 Air/Fuel Ratio Sensor Meter
P1032 Air/Fuel Ratio Sensor Meter
P1065 ECM Power Supply Heater
P1102 Mass Air Flow Sensor Function Heater
P1103 MAP Sensor Heater
P1104 MAP Sensor Heater
P1105 MAP/BARO Switch SOL/V
P1108 MAP Sensor Heater
P1110 Intake Valve Timing Control, LH Bank
P1111 Intake Valve Timing Control Solenoid Valve
P1119 Radiator Temperature Sensor Circuit
P1120 TP Sensor 2
P1121 Electronic Throttle Control Actuator
P1122 Electronic Throttle Control Actuator
P1124 Throttle Control Motor Relay
P1125 Tandem TP Sensor
P1126 Throttle Control Motor Relay
P1128 Throttle Control Motor
P1130 Swirl Control Valve Control Solenoid Valve
P1131 Swirl Control Solenoid Valve
P1132 Swirl Control Valve
P1135 Intake Valve Timing Control, RH Bank 2
P1136 Intake Valve Timing Control Solenoid Valve
P1137 Swirl Control Valve Position Sensor
P1138 Swirl Control Valve
P1140 Intake Valve Timing Control Position Sensor, LH Bank 1
P1143 Heated O2 Sensor 1
P1144 Heated O2 Sensor 1
P1145 Intake Valve Timing Control Position Sensor, RH Bank 2
P1146 Heated O2 Sensor 2
P1147 Heated O2 Sensor 2
P1148 Closed Loop, Bank 1
P1163 Heated O2 Sensor 1
P1164 Heated O2 Sensor 1
P1165 Swirl Control Valve Control Vacuum Check Switch
P1166 Heated O2 Sensor 2
P1167 Heated O2 Sensor 2
P1168 Closed Loop, Bank 2
P1169 Heated O2 Sensor 3
P1170 Heated O2 Sensor 3
P1210 Traction Control Signal Circuit
P1211 ABS/TCS Control Unit
P1212 ABS/TCS Communication Line
P1217 Engine Coolant Temperature
P1220 FPCM
P1221 Throttle Actuator Circuit
P1222 Temperature Sensor Circuit
P1223 Throttle Position Sensor 2
P1224 Throttle Position Sensor 2
P1225 Closed Throttle Position Learning
P1226 Closed Throttle Position Learning
P1227 Accelerator Pedal Position Sensor 2
P1228 Accelerator Pedal Position Sensor 2
P1229 Sensor Power Supply
P1271 Air/Fuel Ratio Sensor 1
P1272 Air/Fuel Ratio Sensor 1
P1273 Air/Fuel Ratio Sensor 1
P1274 Air/Fuel Ratio Sensor 1
P1276 Air/Fuel Ratio Sensor 1
P1278 Air/Fuel Ratio Sensor 1
P1279 Air/Fuel Ratio Sensor 1
P1320 Ignition Signal, Primary
P1335 CKP Sensor (Ref)
P1336 CKP Sensor (POS) Cog
P1400 EGRC Solenoid/V
P1401 EGR Temp Sensor
P1402 EGR System
P1440 EVAP Small Leak
P1441 VC/V Bypass/V
P1443 Canister Control Vacuum Check Switch
P1444 Purge Volume Control/V
P1445 Purge Volume Control/V
P1446 Vent Control Valve
P1447 EVAP Purge Flow
P1448 Vent Control Valve
P1456 EVAP Control System
P1464 Fuel Level Sensor Circuit Ground Signal
P1480 Fan Control Solenoid Valve Circuit
P1490 VC/V Bypass/V
P1491 VC Cut/V Bypass/V
P1492 Purge Control/V S/V
P1493 Purge Control/V & S/V
P1564 ASCD Steering Switch
P1568 ICC (Intelligent Cruise Control)
P1572 ASCD (Automatic Sped Control Device) Brake Switch
P1574 ASCD Vehicle Speed Sensor
P1605 A/T Diag Comm Line
P1610 NATS Malfunction
P1611 NATS Malfunction
P1612 NATS Malfunction
P1613 NATS Malfunction
P1614 NATS Malfunction
P1615 NATS Malfunction
P1705 TP Sensor A/T
P1706 PNP Switch
P1720 Vehicle Speed Sensor- A/T Output
P1760 Overrun Clutch S/V
P1775 Torque Converter Clutch Solenoid Valve
P1776 Torque Converter Clutch Solenoid Valve
P1780 Shift Change Signal
P1800 VIAS Control Solenoid Valve
P1805 Brake switch
P1900 Cooling Fan
P2122 Accelerator Pedal Position Sensor
P2123 Accelerator Pedal Position Sensor
P2127 Accelerator Pedal Position Sensor 2
P2128 Accelerator Pedal Position Sensor 2
P2135 Throttle Position Sensor
P2138 Accelerator Pedal Position Sensor