P1336
Crankshaft Position Sensor (Learned Value Not Stored)
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The P1336 code on Nissan vehicles means the ECM has not successfully stored the learned crankshaft position sensor variation values. The ECM needs to learn the specific characteristics of your engine's crankshaft signal pattern to accurately control ignition timing and fuel injection. This code commonly appears after a battery disconnect, ECM reset, or when the crankshaft position sensor has been replaced.
In many cases, this code will resolve itself after driving the vehicle through a complete relearn cycle. This typically involves driving at varying speeds — including some highway driving — for 10–15 minutes with the engine fully warmed up. If the code clears after this driving cycle, no further action is needed.
If the code persists after multiple driving cycles, the crankshaft position sensor itself may be faulty and unable to produce a consistent signal for the ECM to learn from. In that case, replacing the CKP sensor ($25–$100) and then performing the relearn procedure should resolve the issue. This is one of the least expensive Nissan-specific codes to address, and in many cases costs nothing if the relearn procedure alone fixes it.
Severity
Symptoms
- •Engine runs rough or misfires intermittently
- •Check engine light is on
- •Slight hesitation during acceleration
- •Engine may be hard to start after battery disconnect
- •Reduced overall engine performance
- •Idle may be unsteady
Likely Causes
After a battery disconnect, ECM replacement, or code clearing, the ECM needs to relearn the crankshaft position variations. Driving through a complete relearn cycle typically resolves this code.
The CKP sensor is providing inconsistent or out-of-range readings that prevent the ECM from successfully completing the learning process.
Wiring issues between the sensor and ECM cause intermittent signal quality problems that prevent the ECM from storing learned values.
Physical damage to the crankshaft reluctor ring such as missing teeth or debris causes irregular signal patterns that cannot be reliably learned.
Estimated Cost
Professional Repair
Includes parts + labor
Common Fixes
- Perform the CKP relearn procedure by driving at varying speeds for 10–15 minutes
- Replace the crankshaft position sensor if relearn fails
- Inspect and repair CKP sensor wiring and connectors
- Inspect the crankshaft reluctor ring for physical damage