P0341 — Camshaft Position Sensor A Circuit Range/Performance — 5.9 Cummins Common Rail
P0341 on the 5.9L Cummins Common Rail (2003–2007) means the ECM sees the camshaft position sensor signal outside the expected range or performance. The engine…
What it means
The ECM has detected the camshaft position sensor signal is outside the expected range or performance. On this platform the engine has a single cam sensor and gear-driven timing.1
Most likely causes
- Camshaft position sensor signal erratic/out of range — The ECM flags the cam signal as out of range or inconsistent with expected engine operation. Generic definition for cam circuit range/performance applies.1
- Wiring/connector issues to the camshaft position sensor — Intermittent or high-resistance connections can cause range/performance faults on the cam circuit. Diagnose by checking signal integrity and correlation with crank sensor data.1
- ECM signal processing anomaly — The ECM may interpret a good sensor signal as out of range due to internal processing. Compare cam vs crank correlation and sensor supply/ground integrity before condemning the ECM.12
How to diagnose
- Verify freeze-frame conditions and confirm P0341 is present with no additional codes that would indicate a broader issue.
- Inspect camshaft position sensor connector and wiring for oil contamination, chafing, or loose terminals; check sensor supply voltage and ground per service information.
- Using a scan tool, monitor camshaft position sensor signal and compare to crankshaft position sensor signal for correlation; look for dropouts or erratic readings at idle and during a controlled rev.
- Check for technical service information regarding sensor relearn or ECM updates if correlation is good but code persists.
- If signal integrity is confirmed good and correlation is maintained, evaluate ECM inputs and consider further diagnostic steps with appropriate equipment.
Parts and tools you may need
- Digital multimeter
- Scan tool with live data graphing
- Back-probe pins / breakout box
- Dielectric grease
- Shop manual wiring diagrams
Tools you’ll need
- OBD-II scan tool — Monitors live camshaft and crankshaft position sensor data to verify correlation and detect dropouts that trigger P0341.
- Digital multimeter — Checks camshaft position sensor supply voltage, ground continuity, and signal wire integrity for oil contamination or chafing.
- Oscilloscope — Captures the camshaft position sensor waveform to confirm signal range and timing relative to the crankshaft sensor.
Rough cost and difficulty
| Likely repair | Parts | Shop labor | Who usually does it |
|---|---|---|---|
| Wiring or connector repair | $10–$100 | 1–4 hrs | DIY with tools and a manual |
| Crankshaft or camshaft position sensor | $40–$200 | 0.5–2 hrs | DIY with tools and a manual |
| ECM/PCM replacement (programmed) | $600–$2,000 | 1–3 hrs | Shop |
Typical US independent-shop figures; labor runs about $120–$180 per hour (dealers charge more). Confirm the diagnosis before buying parts.
When to see a pro
If the engine exhibits hard start, stalling, or limp mode, have the vehicle inspected promptly by a qualified diesel technician. Do not attempt repairs to high-pressure fuel or safety-critical systems without proper training and equipment.
Check for recalls
Recalls are tied to your truck’s VIN, so check yours directly: enter the VIN at NHTSA’s recall lookup. Open safety recalls are repaired free at a dealer.
Sources
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