Camshaft Position Sensor A Circuit High Input (Bank 2)
The P0348 code indicates that the Engine Control Module (ECM) has detected a voltage signal from the camshaft position sensor on Bank 2 that is higher than the expected range. This sensor monitors the position of the camshaft relative to the crankshaft to optimize fuel injection and ignition timing. A high input can be caused by a faulty sensor, wiring issues, or a problem with the ECM. This code is specific to Bank 2, which is the side of the engine opposite cylinder #1.
01. Most Common Causes
- Faulty camshaft position sensor (Bank 2)
- Short to voltage in the sensor circuit
- Damaged wiring or connector
- Corroded or loose electrical connections
- Failed ECM (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Engine may run rough or misfire
- Hard starting or stalling
- Reduced fuel economy
- Engine may not start at all
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 the sensor's voltage and ground supply with a multimeter.
Step 4: Check the sensor's signal wire for shorts to voltage or ground.
Step 5: If wiring is okay, replace the camshaft position sensor on Bank 2.
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 run poorly, potentially causing further damage.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for a DIY sensor replacement, or $100 to $300 if professionally installed.