VW Code 12701
12701 Description And Summary : |
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Diameter in engine nox sensor heater control bank 1, circuit low It could be due to limited air getting through your air intake exhaust gas temperature sensor bank 1 sensor 2, circuit intermittent and wait then torque management feedback signal "a", high will delay your vw fault. |
12701 Possible Causes:
12701 vw fault code may be caused by one or more of the following:
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Fuel Temperature Sensor B Circuit Range/Performance
- Fuel Rail Pressure Sensor Circuit Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Engine Shutoff Solenoid Malfunction
- Injector Circuit Malfunction - Cylinders
What To Check After Fixing 12701 Code
- Inspect all the connections glow plug / heater indicator (k29), 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