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P2146 Diagnostic Trouble Code Discussion for October 2006

Injector Positive Voltage Relay Circuit Group 1 (Injectors 1 & 4)


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Trouble Ticket Help Requests for DTC P2146
Help Request Posted
2005 GMC Sierra 2500 HD SLE 6.6L MIL Lamp on, low power VIN: 1GTHK23215
P2146: A/F Mode Relay Circuit Malfunction. Intermittently CEL comes on and engine looses power. Happened only once since we had it and we cannot duplicate it while in the shop. We think it's related to TSB 05-06-04-047B but are not sure. We tested the wiring from the control module to the injector and ...
October 06, 2006
2005 GMC Sierra 2500 HD SLE 6.6L MIL Lamp on, low power VIN: 1GTHK23215
P2146: A/F Mode Relay Circuit Malfunction. Intermittently CEL comes on and engine looses power. Happened only once since we had it and we cannot duplicate it while in the shop. We think it's related to TSB 05-06-04-047B but are not sure. We tested the wiring from the control module to the injector and ...
October 07, 2006
2005 GMC Sierra 2500 HD SLE 6.6L MIL Lamp on, low power VIN: 1GTHK23215
P2146: A/F Mode Relay Circuit Malfunction. Intermittently CEL comes on and engine looses power. Happened only once since we had it and we cannot duplicate it while in the shop. We think itís related to TSB 05-06-04-047B but are not sure. We tested the wiring from the control module to the injector and ...
October 06, 2006
2005 GMC Sierra 2500 HD SLE 6.6L MIL Lamp on, low power VIN: 1GTHK23215
P2146: A/F Mode Relay Circuit Malfunction. Intermittently CEL comes on and engine looses power. Happened only once since we had it and we cannot duplicate it while in the shop. We think itís related to TSB 05-06-04-047B but are not sure. We tested the wiring from the control module to the injector and ...
October 07, 2006