LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2021 >> RC F Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Diagnostics - Introduction (2 Of 8) >> SFI System >> Fail-Safe Chart [09/2014 - ] >> Fail-Safe Chart [09/2014 - ]

Fail-Safe Chart [09/2014 - ]

If any of the following DTCs are stored, the ECM enters fail-safe mode to allow the vehicle to be driven temporarily or stops fuel injection.

DTC Code Component Fail-Safe Operation Fail-Safe Deactivation Condition
P0010
P0016
P0017
P0018
P0019
P0020
P1023
P1360
P1361
P1362
P1363
P2614
Camshaft timing control motor
  • Power to camshaft timing control motor is cut.
  • Valve timing of bank that is operating normally is fixed at maximum retard angle.
Pass condition detected and then engine switch turned off
P0011
P0021
VVT system
  • Idling up (misfire prevention), or power to camshaft timing control motor is cut
  • Valve timing of bank that is operating normally is fixed at maximum retard angle
Pass condition detected and then engine switch turned off
P0012
P0022
VVT system
  • Power to camshaft timing control motor is cut
  • Valve timing of bank that is operating normally is fixed at maximum retard angle
Pass condition detected and then engine switch turned off
P0015
P0025
Exhaust camshaft oil control valve
  • Idling up (control of combustion worsening)
  • Stopping fuel-cut control
Pass condition detected
P0031
P0032
P0051
P0052
P101D
P103D
Air fuel ratio sensor heater The ECM turns off the air fuel ratio sensor heater. Engine switch off
P0037
P0038
P0057
P0058
P102D
P105D
Heated oxygen sensor heater The ECM turns off the heated oxygen sensor heater. Engine switch off
P0087
P0088
Fuel pump (for high pressure side)
  • Stop the fuel pump (for high pressure side).
  • Limit the engine speed to 2000 rpm or less.
Pass condition detected
P0102
P0103
Mass air flow meter sub-assembly The ECM calculates fuel injection according to the engine speed and throttle valve position. Pass condition detected
P0112
P0113
Intake air temperature sensor The ECM estimates the intake air temperature to be 20°C (68°F). Pass condition detected
P0115
P0117
P0118
Engine coolant temperature sensor The ECM estimates the engine coolant temperature to be 80°C (176°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 The ECM cuts off throttle actuator current and the throttle valve is returned to a 6° throttle position by the return spring.
The ECM then adjusts the engine output by controlling fuel injection (intermittent fuel-cut) and ignition timing in accordance with the accelerator pedal angle to allow the vehicle to continue at minimal speed*1.
Pass condition detected and then engine switch turned off
P0192
P0193
Fuel pressure sensor
  • Stop the fuel pump (for high pressure side).
  • Limit the engine speed to 2000 rpm or less.
Pass condition detected and then engine switch turned off
P0201
P0202
P0203
P0204
P0205
P0206
P0207
P0208
Injector driver (EDU)
  • Stop fuel injection for an abnormal cylinder and related other cylinders.
  • Limit the engine speed to 3000 rpm or less.
Pass condition detected and then engine switch turned off
P0300
P0301
P0302
P0303
P0304
P0305
P0306
P0307
P0308
*2
  • Fuel injector assembly
  • Electronic throttle control system
When a catalyst-damaging misfire occurs (MIL blinking), the following fail-safe operation is performed for catalyst overheat malfunction prevention.
  1. Under a low load and at a low engine speed:

    - Fuel cut is performed on the malfunctioning cylinder.

  2. Under a high load and at a high engine speed:

    - Throttle valve opening angle control is performed.

    - Fuel cut is performed on all cylinders or the malfunctioning cylinder.

Pass condition detected and then engine switch turned off
P0327
P0328
P032C
P032D
P0332
P0333
P033C
P033D
Knock control sensor The ECM sets the ignition timing to maximum retard. Engine switch off
P0351
P0352
P0353
P0354
P0355
P0356
P0357
P0358
Ignition coil assembly The ECM cuts the fuel injection. Pass condition detected
P0504 Stop light switch assembly The accelerator pedal opening angle is fixed when there is an accelerator pedal malfunction or history of a malfunction. Pass condition detected
P062D
P062E
Injector driver (EDU) INJ relay shut off. Pass condition detected and then engine switch turned off
P1235
P1236
Fuel pump (for high pressure side) (spill control valve) Stop the fuel pump (for high pressure side). Pass condition detected
P1276
P1277
P1278
P1279
P127A
P127B
P127C
P127D
Fuel injector assembly (for port injection)
  • Limit the engine speed to 2000 rpm or less.
  • Fuel cut of malfunction cylinder.
Pass condition detected and then engine switch turned off
P2120
P2121
P2122
P2123
P2125
P2127
P2128
P2138
Accelerator pedal position sensor The accelerator pedal position sensor has 2 sensor circuits: Main and Sub.
If either circuit malfunctions, the ECM limits the engine output.
If both circuits malfunction, the ECM regards the accelerator pedal as being released. As a result, the throttle valve is closed and the engine idles.
Pass condition detected and then engine switch turned off
P2237
P2238
P2239
P2240
P2241
P2242
P2252
P2253
P2255
P2256
Air fuel ratio sensor
  • Air fuel ratio feedback control is stopped.
  • Current to the air fuel ratio sensor heater is cut.
Pass condition detected and then engine switch turned off

HINT: 

*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.