KlaroP0125
MODERATEInsufficient Coolant Temperature for Closed Loop Fuel Control
What this code means
Insufficient Coolant Temperature for Closed Loop Fuel Control. These codes concern the sensors that tell the control unit about the mixture: mass airflow, oxygen sensors, fuel trim corrections. They often point to an air leak or an ageing sensor rather than an outright failure.
How to read this code
- PPowertrain
- 0standardised code
- 1Fuel and air metering
- 25P0125
The letter P names the system: Powertrain. The digit 0 that follows marks a standardised code, shared by all manufacturers code. The next digit, 1, locates the fault: fuel and air metering.
What to do
Have it checked this week. The car remains usable, but the fault will not clear itself and will fail the roadworthiness test.
Clearing a code switches the light off but repairs nothing: if the fault remains, the code comes back.
Nearby codes
- P0120Throttle Pedal Position Sensor/Switch A Circuit Malfunction
- P0121Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance Problem
- P0122Throttle/Pedal Position Sensor/Switch A Circuit Low Input
- P0123Throttle/Pedal Position Sensor/Switch A Circuit High Input
- P0124Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- P0126Insufficient Coolant Temperature for Stable Operation