What it means
The forced shutdown voltage feedback of battery charger A is high. Safety shutdown line may be compromised.
At a glance
- Usually lights the check-engine light
- The engine or gearbox may go into limp mode
How it works
Charger A's forced-shutdown feedback tells the control system whether its safety shutdown line is at the expected state. P2E34 sets when that feedback voltage is higher than expected, which can result from a wiring or shutdown-circuit fault and can make charging unavailable or unreliable.
Common causes
Most likely first.
- Forced shutdown wire fault
- Module shutdown circuit fault
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
How to diagnose it
- Use freeze-frame and live data to verify that charger A forced-shutdown feedback is high and identify the operating condition when it occurs.
- Inspect the forced-shutdown harness and connectors for a short to battery positive, damaged insulation, corrosion, or poor terminal fit.
- Check for other charger A or high-voltage system codes that may be affecting the shutdown line.
- Test the forced-shutdown wire and feedback circuit according to the manufacturer's wiring diagram and compare results with the manufacturer's specification.
- If the harness checks out, follow the manufacturer's procedure to test the charger A shutdown circuit and module input.
Common fixes
- Repair wiring shorted to battery positive or otherwise damaged.
- Clean, reseat, or repair a poor forced-shutdown connector terminal.
- Repair the shutdown circuit fault confirmed by circuit testing.
- Replace the affected module only if its internal fault is confirmed by the manufacturer's procedure.
Can I keep driving?
Charging may be interrupted or unavailable, and the forced-shutdown feedback is part of a safety-related path. Stop charging if the vehicle displays a high-voltage warning and have the fault diagnosed rather than attempting to bypass the line.
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.