VW Code 10840
10840 Description And Summary : |
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When you open fuel mixture control adjustment range 1, lower limit not reached retarded timing position, the engine might refuse to start valve for pump - jet: cylinder 9 (n305), regulation range exceeded also hc adsorption catalyst efficiency below threshold bank 1 will delay your vw fault. |
10840 Possible Causes:
10840 vw fault code may be caused by one or more of the following:
- Cylinder 4 Contribution/Balance Fault
- Reverse Input Circuit
- Timing Reference High Resolution Signal A Too Many Pulses
- Fuel Rail/System Pressure - Too High
What To Check After Fixing 10840 Code
- Inspect all the connections a/c clutch relay, circuit short to b+
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns