BMW 21E6E9: Charging Mode Interrupted (KLE Module)
BMW fault code 21E6E9 means the KLE, the Convenience Charging Electronics module, recorded a charging session that was interrupted. In most cases with no actual charging complaint, BMW's own bulletin says this is caused by power grid fluctuations or a workshop scan session, and the code should simply be cleared rather than treated as a hardware failure.
Quick facts
- System
- Plug-in Hybrid / Charging Electronics
- Severity
- Low
- Can you still drive?
- Yes, safe to drive
- Applies to
- KLE module on BMW plug in hybrids. The bulletin names F30 PHEV (330e), G12 PHEV (740e) and G30 PHEV (530e). The 2018 revision explicitly added G12 and G30 behaviour to a bulletin that started as a 330e document, so earlier F30 330e cars are the original population.
Symptoms
- Often no symptom at all, code found only during a diagnostic scan with no customer complaint
- Charging not possible message appearing on the display
- Indicator light on the charging socket showing red
- Charging session starting then stopping partway through
- Household circuit breaker tripping when the car is plugged in, in home charging cases
Common causes, most likely first
- 1
Power grid voltage fluctuation or interrupted supply at the socket
This is the cause BMW lists first when there is no genuine charging complaint from the customer
- 2
Workshop induced entry, for example left behind after an air conditioning charging session
Common and does not reflect a real charging problem with the car
- 3
Home wiring or charging installation issue, such as a circuit that trips under load
Worth checking on the home side before assuming the car is at fault
- 4
Charging cable or charging socket fault, including a damaged or contaminated socket
- 5
Hardware defect in the KLE convenience charging electronics module itself
This is where BMW's own procedure ends up only when the customer genuinely loses charging sessions repeatedly
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Frequently asked questions
Can I still drive the car with code 21E6E9?
Yes. This is a charging side fault, not a drive side one. The car still runs on the petrol engine and on whatever charge remains in the high voltage battery, so it is safe to drive normally. What you lose is the ability to plug in and refill, so the car behaves more like a heavier petrol car and fuel use goes up. Get it scanned properly before assuming the charger has failed.
Does this always mean the KLE module needs to be replaced?
Not usually. BMW's own guidance says that if there is no genuine charging complaint, this code is most often caused by power grid fluctuations or a workshop scan session, and should simply be cleared, not treated as a broken part. A KLE hardware issue only comes into the picture when the customer is genuinely and repeatedly unable to charge. A proper diagnostic read is needed to tell these apart, this page cannot confirm which one applies to your car.
What does fixing this actually involve?
If there is no real charging complaint, this is usually resolved at the workshop by clearing the stored code, not by replacing any part. If charging genuinely and repeatedly fails, the workshop will look at the charging cable, the charging socket assembly, or in confirmed cases the KLE convenience charging electronics module itself, alongside checking the home charging supply. Which path applies depends on a proper diagnostic read at the workshop. WhatsApp us the code and car model for stock and today's price.
Which BMW models does code 21E6E9 apply to?
This code applies to the KLE module on BMW plug in hybrid models. BMW's bulletin names the F30 generation 330e, the G12 generation 740e, and the G30 generation 530e. The F30 330e was the original population this bulletin was written for, with 740e and 530e behaviour added in a later revision.