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P1235 Diagnostic Trouble Code Discussion for June 2009

High Pressure Fuel Pump Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1235
Help Request Posted
1999 Mercedes-Benz SLK230 Kompressor 2.3L Poor performance VIN: WDBKK47F0X
P1235: Recirculated air flap signal output stage. ... Cleared and the P1236 comes back as pending. Research on archives pointed a lot of directions with many suggesting the K40 relay box. This thing has the supercharger on at idle and this car is a dog while driving. Need help...
June 18, 2009
2003 Ford Focus SE 2.3L Hesitation, Surge, Cuts out, Stall, MIL Lamp on VIN: 1FAFP34Z63
P1235: fuel pump driver circuit out of range. Greetings. customer states that there is a clicking noise from under dash near feet/fuse panel area, car loses power, all dash warning lights come on, and heater comes on by itself. After sitting overnight the car starts and runs fine. Customer states after dr...
June 19, 2009