P1309moderate severityPowertrain
Misfire Detection Monitor Disabled
on 2021 Ford Bronco 2.3L I4 EcoBoost · 4WD
What this code means
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.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1