P0340 Camshaft Position Sensor Circuit Malfunction

Description and meaning of DTC p0340

This diagnostic trouble code (DTC) is a generic powertrain code. It is considered generic because it applies to all makes and models of vehicles (1996-newer), although specific repair steps may be slightly different depending on the model. So this engine code article applies to Nissan, Ford, Toyota, Chevrolet, Dodge, Honda, GMC, etc. This P0340 code indicates that a problem was detected in the camshaft position sensorcircuit. Since it says circuit, that means the problem couldlie in any part of the circuit - the sensor itself, the wiring, or the PCM. Don't just replace the CPS (camshaft position sensor) and think that will definitelyfix it.

p0340 diagnostic trouble code symptoms

Symptoms can include:Hard starting or no startRough running / misfiringLoss of engine power

DTC p0340 - possible causes

A code P0340 could mean one or more of the following has happened: a wire or connector in the circuit could be grounded/shorted/brokenthe camshaft position sensor may have failedthe PCM may have failedthere exists an open circuitthe crankshaft position sensor may have failed

How to fix OBD-II diagnostic trouble code p0340

With a P0340 OBD-II trouble code, diagnosis can be tricky at times. Hereare some things to try:Visually inspect all the wiring and connectors in the circuitCheck for continuity in the circuit wiringCheck the operation (voltage) of the camshaft position sensorReplace the camshaft position sensor as requiredCheck the crankshaft position circuit as wellReplace circuit wiring and/or connectors as requiredDiagnose/replace the PCM as required

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