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Q: P0231 code coming on - reduced RPM and trembling with the AC on

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رجفة مع الAc تنخفض سرعة Rpm

Translation: Trembling with the AC and reduced speed Rpm

My car has 231500 miles.
My car has a manual transmission.

A: Diagnostic Trouble Code P0231 relates to a ...

Diagnostic Trouble Code P0231 relates to a problem with the wiring in the fuel pump circuit, although it is also possible to have a faulty fuel pump that draws too much current and creates a voltage drop in the circuit. Possible causes of code P0231 include a blown fuel pump fuse due to a short to ground, an open in the feedback circuit, loose, damaged or chafing wiring or terminal connections, and/or a bad fuel pump relay. You will want to have a certified mechanic test the fuel system thoroughly so that this code can be properly repaired.

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