Dynamic Skip Fire (DSF) Control Module Communication Error
2021-2023 Dodge Durango SRT Hellcat 6.2L V8 Supercharged
Description
The Dynamic Skip Fire control module that selectively fires individual cylinders based on demand has a communication fault with the PCM.
Symptoms
- Check Engine Light
- DSF system disabled
- Constant all-cylinder firing
- Reduced fuel economy
- Engine may vibrate more than usual
- No smooth cylinder deactivation transitions
Common Causes
- CAN bus communication fault
- DSF module failure
- PCM DSF driver circuit issue
- Wiring harness damage
- Software version mismatch
Diagnostic Steps
- Check communication between DSF module and PCM
- Read DSF module fault codes
- Inspect CAN bus wiring to DSF module
- Verify software versions match
- Test DSF module power supply
Repair Notes
Repair CAN bus wiring. Replace DSF module if internal fault. Update software if version mismatch detected.
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
P3625 on Other Vehicles
Dodge Attitude
2015-2025 1.2L I3
Dodge Challenger
2015-2024 3.6L V6 Pentastar
Dodge Challenger
2015-2024 5.7L V8 Hemi
Dodge Challenger
2015-2024 6.2L V8 Supercharged Hellcat
Dodge Challenger
2015-2024 6.4L V8 Hemi 392
Dodge Challenger R/T
2015-2024 5.7L V8 Hemi
Dodge Challenger R/T Scat Pack
2015-2024 6.4L V8 392
Dodge Challenger SRT Demon
2018-2024 6.2L V8 Supercharged
Common Questions
What does code P3625 mean on a 2021-2023 Dodge Durango SRT Hellcat?
P3625 stands for "Dynamic Skip Fire (DSF) Control Module Communication Error". The Dynamic Skip Fire control module that selectively fires individual cylinders based on demand has a communication fault with the PCM.
What are the symptoms of P3625 on a Dodge Durango SRT Hellcat?
Common symptoms of P3625 include: Check Engine Light, DSF system disabled, Constant all-cylinder firing, Reduced fuel economy, Engine may vibrate more than usual, No smooth cylinder deactivation transitions.
What causes P3625 on a 2021-2023 Dodge Durango SRT Hellcat?
Common causes of P3625 include: CAN bus communication fault, DSF module failure, PCM DSF driver circuit issue, Wiring harness damage, Software version mismatch.