SFI SYSTEM > FAIL-SAFE CHART |
| DTCs | Components | Fail-safe Operation | Fail-safe Deactivation Condition |
| P0031, P0032, P0051 and P0052 | Air-fuel Ratio (A/F) Sensor Heater | ECM turns off A/F sensor heater. | Ignition switch OFF |
| P0037, P0038, P0057 and P0058 | Heated Oxygen Sensor Heater | ECM turns off heated oxygen sensor heater. | Ignition switch OFF |
| P0100, P0102 and P0103 | Mass Air Flow (MAF) Meter | ECM calculates ignition timing according to engine speed and throttle valve position. | Pass condition detected |
| P0110, P0112 and P0113 | Intake Air Temperature (IAT) Sensor | ECM estimates IAT to be 20°C (68°F). | Pass condition detected |
| P0115, P0117 and P0118 | Engine Coolant Temperature (ECT) Sensor | ECM estimates ECT to be 80°C (176°F). | Pass condition detected |
| P0120, P0122, P0123, P0220, P0222, P0223, P2102, P2103, P2111, P2112, P2118, P2119, and P2135 | Electronic Throttle Control System (ETCS) | ECM cuts off throttle actuator current and throttle valve returns to 6°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.* | Pass condition detected and then ignition switch turned OFF |
| P0327, P0328, P0332 and P0333 | Knock Sensor | ECM sets ignition timing to maximum retard. | Ignition switch OFF |
| P0351 to P0356 | Igniter | ECM cuts fuel. | Pass condition detected |
| P2120, P2121, P2122, P2123, P2125, P2127, P2128 and P2138 | Accelerator Pedal Position Sensor | Accelerator pedal position sensor has 2 sensor circuits: Main and Sub. If either of circuits malfunctions, ECM controls engine using other circuit. If both of circuits malfunction, ECM regards accelerator pedal as being released. As a result, throttle valve is closed and engine idles. | Pass condition detected and then ignition switch turned OFF |
