Crankshaft Position Sensor A Range/Performance Problem
The Crankshaft Position Sensor is not working properly.
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What it means (plain English)
The crankshaft position sensor tracks the position of the crankshaft so the engine control module knows when to inject fuel and ignite it. If it reports incorrect info, the engine may misfire or run poorly.
What the computer is actually seeing
The computer expects a consistent signal from the crankshaft position sensor, usually a square wave signal between 0.5V and 5V. If the signal fluctuates outside of these values or is inconsistent, it triggers the P0336 code.
What a healthy reading looks like
Crankshaft position signal should be a square wave oscillating between 0.5V and 5V with an expected frequency of 1-4ms per revolution of the crankshaft, depending on the engine speed.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Check the wiring and connector at the crankshaft position sensor for frays or corrosion. Repair as necessary. Decision: If wiring is intact, go to step 2. Otherwise, fix wiring and retest.
- 22. Measure the voltage output from the crankshaft position sensor when the engine is cranking. Expect a signal between 0.5V and 5V. Decision: If voltage is in range, go to step 3. If not, replace the sensor and retest.
- 33. Inspect the timing chain/belt for proper tension and alignment. Make sure it hasn't skipped a tooth. Decision: If timing is correct, consider a replacement sensor. If timing issue found, repair timing components and retest.
Common causes
- Faulty crankshaft position sensor
- Damaged wiring harness or connectors
- Oil contamination on the sensor
- Timing chain/belt issues affecting crankshaft position
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It may run rough or misfire, but you can drive it temporarily. Address it soon to avoid engine damage.
Will the code come back after I clear it?
If the underlying issue isn't resolved, yes, the code will likely return.
Why is this code paired with other codes?
Multiple codes suggest interconnected issues, like sensor failures or timing problem that affect engine performance.
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