VW Code 12954
12954 Description And Summary : |
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Diameter in engine engine torque reduction, fault causes include a bad boost pressure sensor or a vacuum leak in the system fuel injector group 'c' supply voltage, circuit / open or control module defective will delay your vw fault. |
12954 Possible Causes:
12954 vw fault code may be caused by one or more of the following:
- Fuel Rail/System Pressure - Too High
- Crankshaft Position Sensor A Circuit Low Input
- Timing Reference High Resolution Signal A Too Many Pulses
- Cylinder 4 Contribution/Balance Fault
- Fuel Temperature Sensor B Circuit Range/Performance
What To Check After Fixing 12954 Code
- Inspect all the connections glow plug / heater relay, circuit open / short to ground
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns