If any of the following DTCs are recorded, the ECM enters fail-safe mode to allow the vehicle to be driven temporarily.
| DTC No. | Component | Fail-Safe Operation | Fail-Safe Deactivation Condition |
|---|---|---|---|
| P0112 P0113 |
Intake Air Temperature sensor | ECM estimates intake air temperature to be 20°C (68°F) | Pass condition detected |
| P0116 P0117 P0118 |
Engine Coolant Temperature sensor | ECM performs engine control using estimated engine coolant temperature calculated from intake air temperature at time of engine start and intake air volume | Pass condition detected |
| P0121 P0122 P0123 P0221 P0222 P0223 |
Throttle Position sensor | ECM limits its accelerator pedal position sensor value to below 40%. | Pass condition detected and ignition switch off |
| P0301 P0302 P0303 |
Misfire detected | If misfire rate of cylinder exceeds catalytic damage misfire rate, fuel supply to that cylinder is suspended | Pass condition detected |
| P0327 P0328 |
Knock sensor | ECM sets ignition timing to maximum retard | Pass condition detected |
| P0335 P0336 |
Crankshaft position sensor |
|
Pass condition detected |
| P0400 P0403 |
EGR valve assembly | ECM assumes that EGR valve is closed, so that ignition angle is controlled with safety valve | Pass condition detected |
| "P0121, P0122 or P0123" and "P0221, P0222 or P0223 " P0606 P060A*1 P0657 P2101 P2102 P2103 P2109 P2111 P2118 P2129 |
Throttle control system | Power source of throttle control motor shuts down, and engine speed is limited by fuel cut. However, if DTC P2111 (Throttle Actuator Control System - Stuck Open) is stored, engine speed will be limited to 0 rpm and engine will stop. |
Pass condition detected and ignition switch off |
| P060A*2 P2122 P2123 P2127 P2128 P2138 |
Accelerator position sensor | ECM limits its accelerator pedal position sensor value below 40%. | Pass condition detected and ignition switch off |
| P060D "P2122 or P2123" and "P2128 or P2127 " |
Accelerator position sensor | Drive with "First idle" condition | Pass condition detected and ignition switch off |
Tech Tips
*1: When the throttle monitoring CPU of the ECM is malfunctioning.
*2: When the accelerator pedal position monitoring CPU of the ECM is malfunctioning.