What it means
The DC/DC converter enable signal drops out or jumps intermittently. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
At a glance
- Usually lights the check-engine light
- The engine or gearbox may go into limp mode
How it works
The DC/DC converter enable circuit carries a control signal used to allow converter operation. The ECM monitors that signal and sets this code when it drops out or changes erratically, which can interrupt conversion and affect low-voltage supply or charging.
Common causes
Most likely first.
- Enable connector not seated
- Noisy ground reference
- Connector with intermittent contact under vibration
Symptoms
- Hybrid or EV system warning light
- Reduced power or limited electric drive
- Charging may be interrupted
- Reduced electric range
How to diagnose it
- Record freeze-frame data and check live data or status indicators for the converter enable command when the fault occurs.
- Inspect the enable circuit’s connector and harness for loose seating, pushed-back pins, water ingress, or chafing.
- Check the enable circuit’s power, ground, and signal connections using the manufacturer’s wiring information.
- Monitor the enable status while gently moving accessible harness sections to find a vibration-sensitive connection.
- Test the circuit for intermittent continuity or unstable connections, then confirm the enable signal remains steady after repair.
Common fixes
- Reseat and secure the converter enable connector.
- Repair chafed or damaged enable wiring.
- Restore corroded, wet, or pushed-back connector terminals.
- Repair an unstable ground or other faulty enable circuit connection.
Can I keep driving?
If the hybrid/EV warning appears with reduced power or interrupted charging, limit driving and avoid heavy electrical or acceleration demands. Stop safely if the vehicle loses power or shows a stop-driving warning.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.