P1640
Output Driver Module 'A' Error Conditions
Severity
⚠️ MediumCan you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)
Symptoms
- Check Engine light comes on
- The car goes into emergency mode
- Reduced engine power
- Unstable engine operation
- Failure of some electronic systems
Causes
- Output module 'A' faulty
- Open or short circuit in control circuit
- Poor contact in module connectors
- Module power problems
- Engine control unit malfunction
How to Fix
- Check the integrity of the module control circuit
- Check contacts in module connectors
- Check the power supply and ground of the module
- Test output module 'A'
- Replace the module if necessary