Timing Belt Skipped One Or More Teeth
Table of contents
P1390 Possible Causes
- Timing belt has jumped one or more teeth
- Loose Camshaft or Crankshaft Position Sensor
How do I fix code P1390?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P1390 code
The cost of diagnosing the P1390 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
When is the code detected
The Powertrain Control Module (PCM) has detected a misalignment between the cam sensor and crank sensor.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1390 Description
With the engine running, the Powertrain Control Module (PCM) enables the Inhibit condition test every 44 ms and monitors for misalignment between the Camshaft Position (CMP) and Crankshaft Position (CKP) sensors. If the CMP signal is offset from the CKP sensor one tooth or more, this trouble code is set. With a cold engine or if the start-to-run transfer is too long Whenever engine speed is outside of its given windows Whenever there is a large change in MAP sensor input