What does code P1336 mean?

Q: What does code P1336 mean?

Crankshaft Position System Variation Not Learned. P1336 means the engine control module (ECM) has not learned the crankshaft position sensor's variation pattern, which is the small timing difference between the crankshaft reluctor wheel teeth. The ECM needs this learned profile to accurately detect misfires and control ignition timing, and it sets the code when the learn procedure has not been completed or the stored values are invalid.

DTC codes / GM codes / P1336

P1336 · GMCrankshaft Position System Variation Not Learned

P1336 means the engine control module (ECM) has not learned the crankshaft position sensor's variation pattern, which is the small timing difference between the crankshaft reluctor wheel teeth. The ECM needs this learned profile to accurately detect misfires and control ignition timing, and it sets the code when the learn procedure has not been completed or the stored values are invalid.

SystemPowertrain

Code typeGM specific

SeverityMedium

Fix difficultyIntermediate

AreaIgnition system and misfire

Guidance is general and written for GM vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.