P1336
Crankshaft Position (CKP) System Variation Not Learned
What it means
P1336. Crankshaft Position (CKP) System Variation Not Learned. This Chevy-enhanced code applies to Silverado, Sierra, Tahoe, Corvette, Camaro.
Findings, check these first
- CKP variation relearn never performed after PCM replacement
- New crankshaft position sensor installed without a CASE relearn
- PCM reflash wiping the stored crank variation table
- Worn reluctor ring or excessive crankshaft endplay
- Low battery voltage interrupting a relearn attempt
Standard procedure
- Confirm no other CKP or CMP codes are present before attempting a relearn
- Run the CKP System Variation Learn with a Tech2 or GDS2 on a fully warmed engine
- Inspect the CKP sensor, reluctor ring, and connector if the relearn fails
- Verify battery and charging system health so voltage holds during the procedure
- Repeat the relearn after any CKP sensor or PCM service, then verify the code stays clear
Look up another code
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Sources and review
Review: checked against the recorded source material.
- OBDII Code P1336 CHEVROLET - Crankshaft Position (CKP) System Variation Not Learned | Engine-Codes.com
archived reference page (engine-codes.com via Wayback Machine)
Supports: code identity and Chevrolet application
Fetched directly. Exact title match. Model and year fitment remain curator claims.
Last updated 2026-09-13.
Report a correction for P1336. Include your vehicle, the issue and a source if you have one.
This fault is part of the Chevy P1xxx fuel and ignition codes guide. It covers the family and the order to check it.