P0193
MODERATEFuel Rail Pressure Sensor Circuit High Input
What this code means
Fuel Rail Pressure Sensor Circuit High Input. 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
- 93P0193
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
- P0190Fuel Rail Pressure Sensor Circuit Malfunction
- P0191Fuel Rail Pressure Sensor Circuit Range/Performance
- P0192Fuel Rail Pressure Sensor Circuit Low Input
- P0194Fuel Rail Pressure Sensor Circuit Intermittent
- P0195Engine Oil Temperature Sensor Malfunction
- P0196Engine Oil Temperature Sensor Range/Performance
- P0197Engine Oil Temperature Sensor Low
- P0198Engine Oil Temperature Sensor High