What does code P0340 mean on a Ram and is it safe to drive?
P0340: Camshaft Position Sensor Circuit Malfunction. Here's what it means on your Ram, what usually causes it, what repairs typically cost, and how safe it is to keep driving.
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What this code means
The PCM is not receiving a valid signal from the camshaft position sensor. Affects ignition timing and fuel injection.
Common causes for your Ram
- Failed camshaft position sensor
- Wiring or connector issue
- Timing chain/belt misalignment (less common)
Symptoms
- Check Engine Light
- No start or hard start
- Rough run, stalling
- Reduced power
Typical fixes
- Replace camshaft position sensor
- Repair wiring/connector
- Verify timing if sensor replacement doesn't fix
Repair cost range
For a Ram, repairs for P0340 often fall between $100 and $500, depending on the cause and whether you use OEM or aftermarket parts. Labor rates vary by location.
Known issues on Ram
Ram P0340 cam position sensor fault on the Pentastar is typically a failed sensor or cam cover gasket leak contaminating the connector. On the HEMI, P0340 alongside ticking noise may indicate a VVT phaser issue that requires oil service history evaluation.
Most commonly affected models
Ram 1500 5.7L HEMI 2009–2021Ram 1500 3.6L Pentastar 2012–2021