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P1634, P1635

Read the instructions below then start the fault diagnostic procedure.

Symptom: CHECK ENGINE lamp on. Car in limp-home mode.

P1634, P1635


P1634 Voltage Supply Group 1. Short to Ground.

P1635 Voltage Supply Group 1. Short to B+.


Fault symptoms


CHECK ENGINE lamp on.

Car in limp-home mode.


Conditions

The following conditions apply for this DTC:


P1634: The power supply is shorted to ground. The output voltage is less than 4.8 V for 0.2 seconds.

P1635: The power supply is shorted to the battery voltage. The output voltage exceeds than 5.2 V for 0.2 seconds.


Diagnostic help

If there is a fault, the car reacts according to the limp-home values it receives for boost pressure (100 kPa/1 bar) and charge air temperature (20°C).