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
Description
When a DTC is detected, ECM executes a mode (in the Fail-safe mode) applicable to the DTC. The fail-safe mode has the preset traveling control mode (accelerator angle variation and engine output limit) and device fix mode.
|
Fail safe mode |
Vehicle behavior |
Pattern |
|
|
Traveling control mode |
Accelerator angle variation control |
ECM controls the accelerator pedal depression speed to make it slower than actual speed. This causes a drop in accelerating performance and encourages the driver to repair malfunction.
NOTE:
ECM does not control the accelerator pedal releasing speed.
|
A |
|
Engine output control |
ECM reduces the engine output, according to the rise in engine speed. This reduces the vehicle speed to encourage the driver to repair malfunction. Driving at 70 km/h (43 MPH) or more is possible* *: This value is a reference value converted from engine power to vehicle speed. Actual power limitation value differs due to the malfunctioning part and driving condition. |
B |
|
|
ECM reduces the engine output, according to the rise in engine speed. This reduces the vehicle speed to encourage the driver to repair malfunction. Driving at 40 km/h (25 MPH) or more is possible* *: This value is a reference value converted from engine power to vehicle speed. Actual power limitation value differs due to the malfunctioning part and driving condition. |
C |
||
|
Device fix mode |
|
D |
|
|
Combustion control mode |
Stratified charge combustion control at starting |
No stratified charge combustion at starting (cold start). |
E |
|
Idle speed control |
Stops feedback control of idle speed and controls with specified speed. |
F |
|
|
Recovery speed control at decelerating |
Stops recovery speed control by the fuel cut at decelerating and controls with specified speed. |
||
|
Idle neutral control |
Stops idle neutral control. |
||
|
Ignition timing correction control |
Partially controls ignition timing control. |
G |
|
|
Retardation control |
Controls ignition timing delay control in the intermediate water temperature range. |
||
Fail Safe List
x:Applicable - : Not applicable
|
DTC No. |
Detected items |
Vehicle behavior |
|||||||
|
Pattern |
Others |
||||||||
|
A |
B |
C |
D |
E |
F |
G |
|||
|
P0011 P0012 P0016 P0075 P052A P052B |
Intake valve timing control |
- |
- |
- |
x |
- |
- |
- |
- |
|
P0014 P0015 P0017 P0078 |
Exhaust valve timing control |
- |
- |
- |
x |
- |
- |
- |
- |
|
P0046 |
Electric wastegate control actuator |
x |
x |
- |
x |
- |
- |
- |
The ECM stops the electric wastegate actuator control, engine can not be supercharged driving.The ECM requlates engine power limiter and EGR Off. |
|
P0087 P0090 |
FRP control system |
x |
- |
x |
x |
x |
- |
- |
- |
|
P0088 |
FRP control system |
x |
- |
x |
- |
x |
- |
- |
- |
|
P00B3 P00B4 |
Engine coolant temperature sensor 2 |
- |
- |
- |
- |
- |
- |
- |
High coolant temperature control does not function. |
|
P0101 P0102 P0103 |
Mass air flow sensor |
x |
x |
- |
x |
x |
x |
x |
NOTE:
Fail-safe mode may not start depending on malfunction type of ECM
|
|
P0117 P0118 |
Engine coolant temperature sensor 1 |
- |
- |
- |
- |
x |
x |
- |
The engine speed does not exceed 2, 000 rpm due to fuel cut |
|
P0122 P0123 P0222 P0223 P2135 |
Throttle position sensor |
- |
- |
- |
x |
- |
- |
- |
The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10 degrees. The ECM regulates the opening speed of the throttle valve to be slower than the normal condition. So, the acceleration will be poor. |
|
P0171 P0172 |
Fuel injection system |
x |
- |
- |
- |
x |
x |
- |
- |
|
P0190 |
FRP sensor |
x |
x |
x |
x |
x |
x |
- |
High pressure fuel pump is activated at maximum discharge pressure.
NOTE:
Fail-safe mode may not start depending on malfunction type of ECM
|
|
P0191 P0192 P0193 |
x |
x |
- |
- |
x |
- |
- |
High pressure fuel pump is activated at maximum discharge pressure.
NOTE:
Fail-safe mode may not start depending on malfunction type of ECM
|
|
|
P0196 P0197 P0198 |
Engine oil temperature sensor |
- |
- |
- |
- |
- |
- |
- |
Exhaust valve timing control does not function. |
|
P0201 P0202 P0203 P0204 |
Injector |
x |
- |
x |
- |
x |
- |
- |
- |
|
P0237 |
Turbocharger boost sensor |
x |
x |
- |
x |
- |
- |
- |
- |
|
P0300 P0301 P0302 P0303 P0304 |
Misfire |
x |
- |
- |
- |
x |
x |
- |
- |
|
P0335 |
Crankshaft position sensor |
- |
- |
- |
x |
- |
- |
- |
- |
|
P0340 |
Camshaft position sensor |
- |
- |
- |
x |
- |
- |
- |
- |
|
P0365 |
Exhaust valve timing control position sensor |
- |
- |
- |
x |
- |
- |
- |
- |
|
P0401 P0402 |
EGR system |
- |
- |
- |
x |
- |
- |
- |
- |
|
P0404 |
EGR volume control valve |
x |
- |
x |
x |
x |
x |
- |
- |
|
P0407 P0408 P046E P046F P0486 |
EGR pressure sensor |
- |
- |
- |
x |
- |
- |
- |
- |
|
P0448 |
EVAP canister vent control valve |
x |
- |
- |
x |
- |
- |
- |
- |
|
P044A P044B P044C P044D P044E |
EGR volume control valve position sensor |
x |
- |
- |
x |
- |
- |
- |
- |
|
P0500 |
Vehicle speed sensor |
x |
- |
- |
- |
x |
x |
- |
- |
|
P0501 P2159 |
x |
- |
- |
- |
x |
- |
- |
||
|
P050A |
Cold start control |
x |
- |
- |
- |
x |
- |
- |
- |
|
P0524 |
Engine oil pressure |
- |
- |
- |
- |
- |
- |
- |
|
|
P0603 P0607 |
ECM |
x |
x |
- |
- |
- |
- |
- |
- |
|
P0604 P0605 P0606 P060B |
- |
- |
- |
x |
- |
- |
- |
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring. |
|
|
P060A |
x |
x |
- |
x |
- |
- |
- |
NOTE:
Fail-safe mode may not start depending on malfunction type of ECM
|
|
|
P062B |
x |
- |
x |
- |
x |
- |
- |
||
|
P0643 |
Sensor power supply |
- |
- |
- |
x |
- |
- |
- |
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring. |
|
P119A |
FRP sensor |
x |
- |
- |
- |
x |
- |
- |
- |
|
P119B |
FRP sensor |
x |
- |
- |
- |
x |
- |
- |
- |
|
P119C |
FRP sensor |
x |
- |
- |
- |
x |
- |
- |
- |
|
P1197 |
Out of gas |
- |
- |
x |
x |
- |
- |
- |
- |
|
P1217 |
Engine over temperature |
- |
- |
- |
- |
- |
- |
- |
The engine speed does not exceed 2, 000 rpm due to fuel cut |
|
P159B |
G sensor |
x |
- |
- |
- |
x |
- |
- |
- |
|
P2100 P2103 |
Throttle control motor relay |
- |
- |
- |
x |
- |
- |
- |
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring. |
|
P2004 |
Intake manifold runner control valve |
- |
- |
- |
x |
- |
- |
- |
- |
|
P2014 |
Intake manifold runner control valve position sensor |
- |
- |
- |
x |
- |
- |
- |
- |
|
P2016 |
Intake manifold runner control valve position sensor |
- |
- |
- |
x |
- |
- |
- |
- |
|
P2017 |
Intake manifold runner control valve position sensor |
- |
- |
- |
x |
- |
- |
- |
- |
|
P2018 |
Intake manifold runner control valve position sensor |
- |
- |
- |
x |
- |
- |
- |
- |
|
P2101 |
Electric throttle control function |
- |
- |
- |
x |
- |
- |
- |
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring. |
|
P2118 |
Throttle control motor |
- |
- |
- |
x |
- |
- |
- |
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring. |
|
P2119 |
Electric throttle control actuator |
x |
x |
- |
x |
- |
- |
- |
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring.
NOTE:
Fail-safe mode may not start depending on malfunction type of ECM
|
|
P2122 P2123 P2127 P2128 P2138 |
Accelerator pedal position sensor |
- |
- |
- |
x |
- |
- |
- |
The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10 degrees. The ECM regulates the opening speed of the throttle valve to be slower than the normal condition. So, the acceleration will be poor. |
|
P2162 |
Vehicle speed sensor |
x |
- |
- |
- |
x |
- |
- |
- |
|
P2263 |
Turbocharger system |
x |
x |
- |
x |
- |
- |
- |
- |
|
P2562 P2566 |
Electric wastegate control valve position sensor |
x |
x |
- |
x |
- |
- |
- |
The ECM stops the electric wastegate actuator control, engine can not be supercharged driving.The ECM requlates engine power limiter and EGR Off. |
|
P2563 |
Electric wastegate control valve position sensor |
x |
x |
- |
x |
- |
- |
- |
- |
|
P2564 |
Electric wastegate control valve position sensor |
x |
x |
- |
x |
- |
- |
- |
- |
|
P2565 |
Electric wastegate control valve position sensor |
x |
x |
- |
x |
- |
- |
- |
- |
|
P26A3 P26A5 P26A6 P26A7 |
Multi-way control valve |
- |
- |
- |
- |
- |
- |
- |
|
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:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • 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.
