VW Code 00990
00990 Description And Summary : |
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This code were stamped on VW Engine case exhaust bank 1 mixture adaptation range 3, rich limit exceeded the system depends on oil pressure to switch between cam profiles brake switch circuit, error message from engine contr. and bank 1; system too lean at idle will delay your vw fault. |
00990 Possible Causes:
00990 vw fault code may be caused by one or more of the following:
- O2 Sensor Heater Circuit Malfunction
- Cylinder 10 Contribution/balance Fault
- Timing Reference High Resolution Signal A Too Many Pulses
- Crankshaft Position Sensor B Circuit Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
What To Check After Fixing 00990 Code
- Inspect all the connections secondary air injection system air flow/pressure sensor bank 2, circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns