Camshaft Position Sensor A Circuit Bank 2
What it means
P0345 means the ECM has lost or seen a faulty signal from the camshaft position sensor on bank 2. The ECM uses that signal to time fuel injection and spark, so a dropout can cause hard starting, stalling, or an outright no-start. The usual cause is the sensor itself or its wiring, sometimes oil-fouled, so inspect the sensor and connector before replacing parts.
Can I keep driving? Limited — the engine may be hard to start, stall, or run rough; drive as little as possible until it's diagnosed.
Real-world scan data
Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.
Common symptoms
What you'll notice
- Check-engine light on
- Hard starting, extended cranking, or a no-start
- Stalling or rough, stumbling running
- Hesitation and reduced power on acceleration
Common causes
Most likely first
- Failed bank 2 camshaft position sensor — most commonLikely
- Damaged, corroded, or loose connector/wiring in the sensor circuitCommon
- Metal debris or oil contamination on the sensor tipCommon
- Damaged reluctor/tone ring the sensor readsLess often
- Faulty ECM (rare)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and note whether the fault is constant or intermittent.
- Locate the bank 2 cam sensor and inspect its connector and wiring for damage, corrosion, or oil intrusion.
- Check the sensor tip for metal shavings or oil and clean it; look for an oil leak feeding the connector.
- Test the sensor's signal, power, and ground against spec; replace the sensor if it's out of range.
- If the circuit is good, inspect the tone ring for damage. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P0345?+
Can I just clear P0345?+
Related codes
Read & clear P0345 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.