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2013 PACCAR MX-13 – P0262 Common rail pump unit 1 – Voltage too high or short circuit to supply on ECU D420 pin A25

Diagnostic Step-by-Step

Verification Drive Cycle

To validate the repair, with DAVIE connected and the key ON, clear the errors. Start the engine and let it idle to verify with DAVIE that the errors do not recur.

 

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