Camshaft Position Sensor A Circuit Range/Performance (Bank 2)
The P0346 code indicates that the Engine Control Module (ECM) has detected a signal from the camshaft position sensor on Bank 2 that is out of the expected range or performance parameters. This sensor monitors the position of the camshaft relative to the crankshaft to ensure proper ignition timing and fuel injection. A fault can cause the engine to run poorly, misfire, or stall.
01. Most Common Causes
- Faulty camshaft position sensor (Bank 2)
- Wiring or connector issues (shorts, opens, corrosion)
- Timing chain/belt misalignment or failure
- Engine control module (ECM) malfunction
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Engine misfire or rough idle
- Hard starting or stalling
- Reduced engine power and fuel economy
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect the camshaft position sensor and wiring for damage or corrosion.
Step 3: Test sensor resistance and voltage with a multimeter per manufacturer specs.
Step 4: Check timing chain/belt alignment and tension.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as the engine may stall or misfire, potentially causing further damage.
How much does it cost to fix?▼
Replacing the sensor typically costs $50-$150 for parts and labor, but timing chain repairs can be much higher.