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P0340

Overview

Code

P0340

Code Type

P

Code Class

P0

System

Engine

Severity Level

High

Emissions Related

true

Drivability Impact

Major

Diagnostic Protocol

OBD2

Freeze Frame Useful

true

Code Definition

Diagnostic trouble code P0340 indicates a malfunction in the camshaft position sensor circuit detected by the ECM

Symptoms

Engine hard starting; Poor performance; Check Engine Light illuminated

Overview applies to this diagnostic code.

Affected Systems

On This Page

  • Code Definition

  • Symptoms

  • Affected Systems

  • Possible Causes

  • Diagnostic Steps

  • Drive Safety Notes​

More Resources

Camshaft position data is used for valve timing and fuel injection synchronization

Possible Causes

Faulty camshaft position sensor; Wiring or connector issues

Diagnostic Steps

1 Confirm the fault code; 2 Inspect camshaft sensor wiring; 3 Monitor live camshaft signal; 4 Replace sensor if no signal is present

Drive Safety Notes

Driving may be possible, but engine performance and starting reliability are affected

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