📟
P0341 is about signal quality, not a dead sensor. The camshaft sensor is generating a signal, but it does not match the expected timing pattern. Timing chain wear is a common hidden culprit - check for chain stretch before replacing the sensor. See top-rated scanners on Amazon ↗
🗺️ Where Is the Problem?
Blueprint view - P0341 camshaft position sensor erratic signal (sensor, chain, or reluctor ring)
These are statistical causes across ALL vehicles - your exact car may rank differently
For example, on a Honda 4-cyl the downstream O2 sensor causes P0341 64% of the time, but on a GM 5.3L V8 the catalytic converter is the cause 71% of the time. Get a probability ranking built specifically for your year, make, model, and mileage.
🔎 Get the ranking for my exact car - $5.99 →
🎯 Top Causes & Probability
50%
#1 - Most Likely
Failing CMP Sensor (Weak Signal)
The camshaft position sensor magnet or Hall-effect element is degrading, producing a weak or intermittent signal that the PCM cannot consistently decode. Often worsens with heat. Replace the sensor as a first step if wiring checks out.
🔩 Part
$20–$100
👨🔧 Labor
$50–$150
⚡ DIY Difficulty
Easy–Medium
25%
#2 - Check First
Timing Chain Wear (Stretched Chain)
A worn or stretched timing chain causes the camshaft to be slightly late relative to the crankshaft. The PCM detects the misalignment as a CMP signal that is out of phase. Chain stretch also sets P0016/P0017 codes.
🔩 Part
$200–$800
👨🔧 Labor
$400–$1,200
⚡ DIY Difficulty
Hard
15%
#3 - Less Common
Wiring / Connector Fault
The CMP sensor harness runs near moving parts and hot surfaces. A cracked connector or chafed wire creates intermittent signal dropout. Perform a wiggle test on the connector with the engine running.
🔩 Part
$5–$30
👨🔧 Labor
$40–$100
⚡ DIY Difficulty
Easy
10%
#4 -
Cam Reluctor Ring Damage
The trigger wheel on the camshaft that the sensor reads can crack or shed a tooth. Inspection requires removal of the valve cover to see the ring directly.
🔩 Part
$50–$400
👨🔧 Labor
$200–$800
⚡ DIY Difficulty
Hard
🚗 Most Affected Vehicles
🔧 Step-by-Step Diagnosis
- Check for Companion Codes - Before touching the sensor, check for P0016, P0017, or P0011–P0014 stored alongside P0341. If timing correlation codes are present, timing chain wear may be the root cause - not the sensor.
- Inspect CMP Sensor Connector - Unplug the connector and inspect for bent pins, pushed-back terminals, and corrosion. Wiggle the harness with the engine running to check for intermittent connection.
📍 Find a Trusted Shop Near You
Please enter a valid 5-digit ZIP code.
Tips for Choosing a Shop
- Ask if they charge a diagnostic fee and whether it applies toward the repair
- Request a written estimate before approving any work
- Ask specifically about the part brand - OEM vs. aftermarket matters for this code
- Check Google reviews for recent mentions of the specific repair you need