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Fail-Safe Table

When any of the following DTCs is detected, ECM enters fail-safe mode as long as malfunction continues to exist but that mode is canceled when ECM detects normal condition after that.

FAIL-SAFE CHART

DTC No. Fail-safe operation Fail-safe mode reactivation condition
P0031  HO2S Heater Control Circuit Low (Bank 1 Sensor 1)
  • ECM stops air/fuel ratio control.
  • ECM stops A/F sensor heater control.
P0032  HO2S Heater Control Circuit High (Bank 1 Sensor 1)
P0051  HO2S Heater Control Circuit Low (Bank 2 Sensor 1)
P0052  HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P2237  O2 Sensor Positive Current Control Circuit/Open (Bank 1 Sensor 1)
P2238  O2 Sensor Positive Current Control Circuit Low (Bank 1 Sensor 1)
P2239  O2 Sensor Positive Current Control Circuit High (Bank 1 Sensor 1)
P2240  O2 Sensor Positive Current Control Circuit/Open (Bank 2 Sensor 1)
P2241  O2 Sensor Positive Current Control Circuit Low (Bank 2 Sensor 1)
P2242  O2 Sensor Positive Current Control Circuit High (Bank 2 Sensor 1)
P2252  O2 Sensor Negative Current Control Circuit Low (Bank 1 Sensor 1)
P2253  O2 Sensor Negative Current Control Circuit High (Bank 1 Sensor 1)
P2255  O2 Sensor Negative Current Control Circuit Low (Bank 2 Sensor 1)
P2256  O2 Sensor Negative Current Control Circuit High (Bank 2 Sensor 1)
P0133  O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)
  • ECM stops air/fuel ratio control.
P0134  O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
P0153  O2 Sensor Circuit Slow Response (Bank 2 Sensor 1)
P0154  O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)
P2195  O2 Sensor Signal Stuck Lean (Bank 1 Sensor 1)
P2196  O2 Sensor Signal Stuck Rich (Bank 1 Sensor 1)
P2197  O2 Sensor Signal Stuck Lean (Bank 2 Sensor 1)
P2198  O2 Sensor Signal Stuck Rich (Bank 2 Sensor 1)
P2A00  O2 Sensor Circuit Range/Performance (Bank 1 Sensor 1)
P2A03  O2 Sensor Circuit Range/Performance (Bank 2 Sensor 1)
P0037  HO2S Heater Control Circuit Low (Bank 1 Sensor 2)
  • ECM stops HO2S-2 control.
  • ECM stops A/F sensor heater control.
P0038  HO2S Heater Control Circuit High (Bank 1 Sensor 2)
P0057  HO2S Heater Control Circuit Low (Bank 2 Sensor 2)
P0058  HO2S Heater Control Circuit High (Bank 2 Sensor 2)
P0137  O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)
  • ECM stops HO2S-2 control.
P0138  O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)
P0139  O2 Sensor Circuit Slow Response (Bank 1 Sensor 2)
P0140  O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)
P0157  O2 Sensor Circuit Low Voltage (Bank 2 Sensor 2)
P0158  O2 Sensor Circuit High Voltage (Bank 2 Sensor 2)
P0159  O2 Sensor Circuit Slow Response (Bank 2 Sensor 2)
P0160  O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)
P2A01  O2 Sensor Circuit Range/Performance (Bank 1 Sensor 2)
P2A04  O2 Sensor Circuit Range/Performance (Bank 2 Sensor 2)
P0101  Mass Air Flow Circuit Range/Performance
  • ECM controls injector drive time (fuel injection volume) according to engine speed and throttle valve operation angle.
  • ECM stops air/fuel ratio control.
  • ECM stops EGR valve control.
P0102  Mass Air Flow Circuit Low Input
P0103  Mass Air Flow Circuit High Input
P0107  Manifold Absolute Pressure Circuit Low Input
  • ECM stops EGR valve control.
P0108  Manifold Absolute Pressure Circuit High Input
P1107  MAP Sensor Rationality Check-Low
P1108  MAP Sensor Rationality Check-High
P0111  Intake Air Temperature Sensor Circuit Performance
  • ECM controls actuators assuming that intake air temperature is 40°C (104°F).
  • ECM stops EGR valve control.
P0112  Intake Air Temperature Sensor Circuit Low
P0113  Intake Air Temperature Sensor Circuit High
P0116  Engine Coolant Temperature Circuit Range/Performance
  • ECM controls actuators assuming that engine coolant temperature is 80°C (176°F) and operates radiator cooling fan is high speed.
  • ECM stops air/fuel ratio control.
  • ECM stops EGR valve control.
  • ECM stops A/C control.
P0117  Engine Coolant Temperature Circuit Low
P0118  Engine Coolant Temperature Circuit High
P0125  Insufficient Coolant Temperature for Closed Loop Fuel Control
P0128  Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
P0122  Throttle Position Sensor (Main) Circuit Low
  • ECM turns off throttle actuator control relay and throttle valve is fixed at the opening of about 10° from its completely closed position (default opening).
  • ECM controls fuel cut at specified engine speed.
P0123  Throttle Position Sensor (Main) Circuit High
P0222  Throttle Position Sensor (Sub) Circuit Low
P0223  Throttle Position Sensor (Sub) Circuit High
P0506  Idle Air Control System RPM Lower Than Expected
P0507  Idle Air Control System RPM Higher Than Expected
P2101  Throttle Actuator Control Motor Circuit Range/Performance
P2102  Throttle Actuator Control Motor Circuit Low
P2103  Throttle Actuator Control Motor Circuit High
P2108  Throttle Actuator Control Module Performance
P2119  Throttle Actuator Control Throttle Body Range/Performance
P0327  Knock Sensor Circuit Low
  • ECM stops knock control.
  • ECM controls ignition timing according to engine speed.
P0328  Knock Sensor Circuit High
P0335  Crankshaft Position Sensor Circuit
  • ECM stops EGR valve control.
P0336  Crankshaft Position Sensor Circuit Range/Performance
P0340  Camshaft Position Sensor Circuit
P0341  Camshaft Position Sensor Circuit Range/Performance
P0500  Vehicle Speed Sensor
  • ECM controls actuators assuming that vehicle speed is 10 km/h (6 mph).
P0532  A/C Refrigerant Pressure Sensor Circuit Low
  • ECM stops A/C system control.
P0533  A/C Refrigerant Pressure Sensor Circuit High
P1603  TCM Trouble Code Detected
  • ECM controls actuators assuming that transmission range switch is N position.
U0101  Lost Communication with TCM
P2122  Pedal Position Sensor (Main) Circuit Low
  • ECM controls throttle valve using that pedal position sensor (sub) signal within specified range.
P2123  Pedal Position Sensor (Main) Circuit High
P2127  Pedal Position Sensor (Sub) Circuit Low
  • ECM controls throttle valve using that pedal position sensor (main) signal within P2128 Pedal Position Sensor (Sub) Circuit High specified range.
P2128  Pedal Position Sensor (Sub) Circuit High
P2135  Throttle Position Sensor (Main/Sub) Voltage Correlation
  • ECM controls throttle valve using that throttle position sensor (main) or throttle position sensor (sub) signal within specified range.
P2138  Pedal Position Sensor (Main/Sub) Voltage Correlation
  • ECM controls throttle valve using that pedal position sensor (main) or pedal position sensor (sub) signal within specified range.
P2227  Barometric Pressure Circuit Range/Performance
  • ECM controls actuators assuming that barometric pressure is 10 kPa (760 P2228 Barometric Pressure Circuit Low mmHg).
P2228  Barometric pressure circuit low
P2229  Barometric Pressure Circuit High
P2627  O2 Sensor Pumping Current Trim Circuit Low (Bank 1 Sensor 1)
  • ECM controls A/F sensor assuming that A/F sensor adjusting resister value is specified value.
P2628  O2 Sensor Pumping Current Trim Circuit High (Bank 1 Sensor 1)
P2630  O2 Sensor Pumping Current Trim Circuit Low (Bank 2 Sensor 1)
P2631  O2 Sensor Pumping Current Trim Circuit High (Bank 2 Sensor 1)
U0121  Lost Communication with Electronic Stability Program/ABS Control Module
  • ECM stops torque reduction control
U0140  Lost Communication with Body Control Module
  • ECM stops A/C system control.
  • ECM controls engine speed not using electric load signal.
  • ECM stops keyless start system control.
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