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P1127 Diagnostic Trouble Code Discussion for May 2011

ETCS Actuator Power Source Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1127
Help Request Posted
2001 Volkswagen Jetta GLS 1.8L Poor Idle Quality, MIL Lamp on VIN: 3VWSD29M51
P1127: Bank 1 System too rich. ... Faults P1297(turbo-throttle valve pressure loss), P1127(system too rich), P1137(system too rich) are all stored. During the test drive, the car runs well, but it does sometimes have a lopey idle. I checked all the boost piping connections wi...
May 17, 2011