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P2123

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P2123 OBD-II Trouble Code: Throttle/Pedal Position Sensor/Switch D Circuit High Input
P2123 Code Definition Throttle/Pedal Position Sensor/Switch D Circuit High Input What the P2123 code means The P2123 trouble code indicates that the Engine Control Module (ECM), which is in charge...

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Question
After replacing valve cover gaskets, car runs horrible, and throws 5 different codes.
Hi there. Look on the engine for any ground wires. There could have been a ground wire that was disconnected to remove the valve covers causing all of the codes to appear. A ground that is not hook up can...

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