P1694
No Messages Received From The Powertrain Control Module
Severity
🔴 HighCan you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–167 (est.)
Symptoms
- Check Engine Light Is On
- The car goes into emergency mode
- Deterioration in dynamics and response to the gas pedal
- Unstable engine operation
- Failure of some electronic systems
Causes
- Control module (PCM) malfunction
- Broken or damaged CAN bus wires
- Poor contact in wiring connectors
- PCM power problems
- Short circuit in communication circuits
How to Fix
- Check the integrity of the CAN bus wiring and connectors
- Check PCM power and ground
- Scan all modules for communication errors
- If necessary, replace the control module
- Update module software