Camshaft Position Sensor Circuit Malfunction -- Bank 2 (Subaru/Nissan)
What does P1340 mean?
The P1340 code means the vehicle's onboard diagnostic system has detected: Camshaft Position Sensor Circuit Malfunction -- Bank 2 (Subaru/Nissan). This is a moderate severity code.
Common Symptoms
- Check Engine Light on
- Engine running rough or misfiring
- Hard starting
- Reduced engine power
- Poor fuel economy
Probable Causes (Ranked by Likelihood)
- Failed camshaft position sensor -- bank 2 Very High
- Damaged wiring to camshaft sensor High
- Oil-contaminated camshaft sensor connector Moderate
- Timing belt or chain issue affecting cam position Moderate
- Reluctor ring damage on camshaft Low
Step-by-Step Diagnostic Procedure
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Check the camshaft position sensor connector on bank 2 for oil contamination
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Test the camshaft position sensor output with an oscilloscope or scan tool
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Inspect the wiring to the sensor for damage or chafing
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Check timing belt/chain condition and tension
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Replace the camshaft position sensor and clear codes
Frequently Asked Questions
Can I drive with code P1340?
You can drive short distances, but the engine may misfire or run rough. If the timing chain or belt is the cause, continued driving could lead to engine damage.
What causes P1340 on Subaru?
Oil leaking onto the camshaft sensor connector is a very common cause on Subaru boxer engines. The cam seal leaks oil onto the sensor, causing it to malfunction. The sensor itself can also fail.
Is P1340 easy to fix?
The camshaft position sensor replacement is a moderate DIY job. On Subaru boxer engines, the bank 2 sensor is on the passenger side of the engine. If oil contamination is the cause, the cam seal should also be replaced.