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P1127 Diagnostic Trouble Code Discussion for June 2004

ETCS Actuator Power Source Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1127
Help Request Posted
1999 Hyundai Elantra GL 2.0L MIL Lamp on VIN: KMHJW25F5X
P1127: Long Term Fuel Trim Multiplier System Too Rich. ... engine, severely overheated, no compression. We installed a used engine, which is running well. The mil light came on after 2 days of driving with a code P1127. The LT Fuel trim was at -21.9. We have tested everything we can think of. Fuel pressure is exac...
June 29, 2004