Misfire Detection Monitor Disabled
2009-2012 Ford Flex 3.5L V6 🇨🇦
Description
The PCM misfire detection monitor is disabled or not functioning. The camshaft position sensor synchronizer may not be providing the correct signal needed for accurate misfire detection. Common on Ford 3.0L, 3.8L, and 4.2L engines.
Symptoms
- Check Engine Light
- Possible rough running
- Other misfire codes may not set properly
- Failed emissions test
Common Causes
- Incorrectly installed camshaft position sensor synchronizer
- Faulty camshaft position sensor
- Damaged CMP sensor wiring
- CMP sensor synchronizer gear misaligned
Diagnostic Steps
- Check camshaft position sensor signal on scan tool
- Verify CMP synchronizer is correctly installed and aligned
- Test CMP sensor resistance and signal
- Inspect CMP wiring and connector
Repair Notes
Verify CMP synchronizer alignment. Replace CMP sensor if signal is weak or absent.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1309 on Other Vehicles
Common Questions
What does code P1309 mean on a 2009-2012 Ford Flex?
P1309 stands for "Misfire Detection Monitor Disabled". The PCM misfire detection monitor is disabled or not functioning. The camshaft position sensor synchronizer may not be providing the correct signal needed for accurate misfire detection. Common on Ford 3.0L, 3.8L, and 4.2L engines.
What are the symptoms of P1309 on a Ford Flex?
Common symptoms of P1309 include: Check Engine Light, Possible rough running, Other misfire codes may not set properly, Failed emissions test.
What causes P1309 on a 2009-2012 Ford Flex?
Common causes of P1309 include: Incorrectly installed camshaft position sensor synchronizer, Faulty camshaft position sensor, Damaged CMP sensor wiring, CMP sensor synchronizer gear misaligned.