How to resolve the P0234 trouble code?

1 Answers
DelAthena
07/29/25 11:14am
"The P0234 trouble code indicates that the turbo/supercharger A is in an overboost condition. Possible causes include: 1. Misfire condition exceeding calibrated threshold; 2. Knock sensor circuit malfunction; 3. Low-speed fuel pump relay failure; 4. Transmission oil temperature exceeding normal range; 5. Turbocharger pressure regulator valve failure, etc. The solution for the P0234 trouble code is: After successfully troubleshooting the car's turbo/supercharger issue, proceed to clear the trouble code. When clearing, follow the specified trouble code clearing method for the vehicle model. Do not arbitrarily disconnect the car battery's negative ground cable to clear the trouble code.
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