What it means
Battery charger B reports a enable circuit low condition. HV charging operation may be impaired. The on-board charger negotiates voltage, current and safety with the EVSE; a fault interrupts charging or limits it to AC slow-charge despite a DC fast charger being attached.
At a glance
- Usually lights the check-engine light
- The engine or gearbox may go into limp mode
How it works
Charger B's enable circuit carries a control signal that allows the charger to operate. P2E36 sets when the module detects that signal below its acceptable range, often because the wire is shorted to ground or a poor connection is pulling the signal down.
Common causes
Most likely first.
- Wire shorted to ground
- Internal wire short
- Connector pins corroded - high contact resistance
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
How to diagnose it
- Review freeze-frame and live data for charger B enable voltage or status to confirm when the circuit reads low.
- Inspect the enable wire and connectors for chafing to ground, internal wire damage, corrosion, or loose terminals.
- Look for moisture or corrosion at connector pins that could create resistance and pull down the enable signal.
- Test the enable circuit for a short to ground and measure its signal as directed by the manufacturer's procedure.
- If the wiring and connector pass, test the charger B module's enable input against the manufacturer's specification.
Common fixes
- Repair a charger B enable wire shorted to ground.
- Clean or replace corroded connector terminals and restore secure contact.
- Repair damaged wiring or a poor connection causing the low signal.
- Repair or replace the charger B module if testing confirms its input has failed.
Can I keep driving?
Charger B may not operate, so charging can fail or be interrupted and the vehicle may have less range than expected. Stop charging if the vehicle reports a high-voltage warning, and avoid probing or repairing high-voltage components.
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.