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P1123 Diagnostic Trouble Code Discussion for May 2006

Throttle Position 'A' Signal In Range (But Lower Than Expected)

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Trouble Ticket Help Requests for DTC P1123
Help Request Posted
2001 Hyundai Accent L 1.5L Hesitation, MIL Lamp on, PInging VIN: KMHCF35G41
P1123: Fuel Trim Adaptive Air System Too Rich. Vehicle came in with MIL on P0422 and P1123. The car lacks power and pings badly. I began by following Mitchell's path for P1123. By their suggestions, I should replace the ECM. I'm not convinced. I have scope tested (Vantage PGM) O2 sensors comparitevely and ...
May 03, 2006