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P1635 Diagnostic Trouble Code Discussion for May 2013

5-Volt Reference 'A' Circuit Malfunction


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Trouble Ticket Help Requests for DTC P1635
Help Request Posted
2003 Chevrolet Monte Carlo LS 3.4L Poor Idle Quality, Hesitation VIN: 2G1WW12E43
P1635: 5-Volt Reference 'A' Circuit Malfunction. This vehicle came in with a hesitation complaint. We noticed a collapsed vacuum line on the evap solenoid and that the ect was unplugged which account for the ect code. This vehicle will run great then all of a sudden the fuel trims go to -20 and it starts sur...
May 22, 2013
2003 Chevrolet Monte Carlo LS 3.4L Poor Idle Quality, Hesitation VIN: 2G1WW12E43
P1635: 5-Volt Reference 'A' Circuit Malfunction. This vehicle came in with a hesitation complaint. We noticed a collapsed vacuum line on the evap solenoid and that the ect was unplugged which account for the ect code. This vehicle will run great then all of a sudden the fuel trims go to -20 and it starts sur...
May 23, 2013
2003 Chevrolet Monte Carlo LS 3.4L Poor Idle Quality, Hesitation VIN: 2G1WW12E43
P1635: 5-Volt Reference 'A' Circuit Malfunction. This vehicle came in with a hesitation complaint. We noticed a collapsed vacuum line on the evap solenoid and that the ect was unplugged which account for the ect code. This vehicle will run great then all of a sudden the fuel trims go to -20 and it starts sur...
May 22, 2013
2003 Chevrolet Monte Carlo LS 3.4L Poor Idle Quality, Hesitation VIN: 2G1WW12E43
P1635: 5-Volt Reference 'A' Circuit Malfunction. This vehicle came in with a hesitation complaint. We noticed a collapsed vacuum line on the evap solenoid and that the ect was unplugged which account for the ect code. This vehicle will run great then all of a sudden the fuel trims go to -20 and it starts sur...
May 23, 2013