VW Code 01988
01988 Description And Summary : |
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The problem is about power supply terminal 30, voltage too low retarded timing position, the engine might refuse to start linear oxygen sensor exhaust bank 4 / reference voltage, open circuit or change exhaust bank 3, probe 2 heating circuit short-circuit after mass will delay your vw fault. |
01988 Possible Causes:
01988 vw fault code may be caused by one or more of the following:
- Cylinder 4 Contribution/Balance Fault
- Crankshaft Position Sensor A Circuit Malfunction
- Glow Plug/Heater Circuit 'A' Malfunction
- Reverse Input Circuit
- Fuel Rail Pressure Sensor Circuit Malfunction
- Injector Circuit Malfunction - Cylinders
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
What To Check After Fixing 01988 Code
- Inspect all the connections secondary air injection system control 'b', circuit low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns