Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Fail-Safe Chart
If any of the following DTCs are set, the ECM enters fail-safe mode to allow the vehicle to be driven temporarily.
| DTC | Component | Fail-safe Operation | Fail-safe Deactivation Condition |
|---|---|---|---|
| P0010, P0020, P0016, P0017, P0018, P0019, P1023, P1360, P1361, P1362, P1363, P2614 | Camshaft timing control motor |
|
Pass condition detected and then engine switch turned off |
| P0011, P0021 | VVT system |
|
Pass condition detected and then engine switch turned off |
| P0012, P0022 | VVT system |
|
Pass condition detected and then engine switch turned off |
| P0015, P0025 | Exhaust camshaft oil control valve |
|
Pass condition detected |
| P0016, P0017, P0018, P0019 | Valve timing deviation |
|
Pass condition detected and then engine switch turned off |
| P0031, P0032, P0051, P0052 | Air-Fuel Ratio (A/F) Sensor Heater | ECM turns off A/F sensor heater | Engine switch off |
| P0037, P0038, P0057, P0058 | Heated Oxygen Sensor (HO2S) Heater | ECM turns off HO2 sensor heater | Engine switch off |
| P0087, P0088 | Fuel Pump for High Pressure |
|
Pass condition detected |
| P0102, P0103, P010C, P010D | Mass Air Flow (MAF) Meter | ECM calculates ignition timing according to engine speed and throttle valve position | Pass condition detected |
| P00AC, P00AD, P0112, P0113 | Intake Air Temperature (IAT) Sensor | ECM estimates IAT to be 20Β°C (68Β°F) | Pass condition detected |
| P0115, P0117, P0118 | Engine Coolant Temperature (ECT) Sensor | ECM estimates ECT to be 80Β°C (176Β°F) | Pass condition detected |
| P0120, P0121, P0122, P0123, P0220, P0222, P0223, P0604, P0606, P060A, P060B, P060D, P060E, P0657, P1607, P2102, P2103, P2111, P2112, P2118, P2119, P2135 | Electronic Throttle Control System (ETCS) | ECM cuts off throttle actuator current and throttle valve returns to 7Β° throttle position by return spring. ECM then adjusts engine output by controlling fuel injection (intermittent fuel-cut) and ignition timing in accordance with accelerator pedal opening angle to allow vehicle to continue at minimal speed*1. | Pass condition detected and then engine switch turned off |
| P0190, P0192, P0193 | Fuel Pressure Sensor |
|
Pass condition detected and then engine switch turned off |
| P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208 | Injector Driver (EDU) |
|
Pass condition detected and then engine switch turned off |
| P062D, P062E | Injector Driver (EDU) | INJ1 (INJ2) relay is shut off | Pass condition detected and then engine switch turned off |
| P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 and P0308*2 |
|
When misfire occurs, fuel cut is performed for catalyst overheat malfunction prevention
|
Pass condition detected and then engine switch turned off |
| P0327, P0328, P0332, P0333 P032C, P032D, P033C, P033D | Knock Sensor | ECM sets ignition timing to maximum retard. | Engine switch off |
| P0351 to P0358 | Ignition Coil | ECM cuts fuel | Pass condition detected |
| P0504 | Stop light switch | Accelerator pedal angle is fixed | Pass condition detected |
| P1235, P1236 | Fuel Pump for High Pressure Side (spill control valve) |
|
Pass condition detected |
| P1276, P1277, P1278, P1279, P127A, P127B, P127C, P127D | Fuel injector for port injection |
|
Pass condition detected and then engine switch turned off |
| P2237, P2238, P2239, P2240, P2241, P2242, P2252, P2253, P2255, P2256 | A/F sensor |
|
Pass condition detected and then engine switch turned off |
| P2120, P2121, P2122, P2123, P2125, P2127, P2128, P2138 | Accelerator Pedal Position (APP) Sensor | APP sensor has 2 sensor circuits: Main and Sub. If either of the circuits malfunctions, ECM controls engine using the other circuit. If both of the circuits malfunction, ECM regards accelerator pedal as being released. As a result, throttle valve is closed and engine idles. | Pass condition detected and then engine switch turned off |
- *1: The vehicle can be driven slowly when the accelerator pedal is depressed firmly and slowly. If the accelerator pedal is depressed quickly, the vehicle may speed up and slow down erratically.
- *2: Misfire related fail-safe operations occur when catalyst overheat malfunctions occur.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
No obligation. See pricing before you book.
