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samcrocker89
My 99 metro has a diagnostic code that is P0172. "Fuel trim bank one condition", what does this mean?
More additional info from diagnostic printout; Explanation- The powertrain control module uses the oxygen sensor to calculate the air/fuel ratio of the engine. The computer has recongnized a rich or lean condition on noe engine bank only. Probable causes- 1.If bank one and two codes set together suspect fuel pressure or MAF sensor. 2.Oxygen sensor defective. 3.Ignition misfire-repair. 4.Fuel injector problem. (End Summary) The PCM has determined that during testing, the fuel system for bank 1 was too rich,(Bank 1 identifies the loction of cylinder #1, while bank 2 identifies the cylinders on the oppisite bank.) Well that's all of the info I have if you can help I'd appreciate it greatly! Just wanna save some gas!
2 AnswersMaintenance & Repairs1 decade ago