What it means
The control pilot charging ventilation switch reports a range/performance condition. Charging ventilation requirement signal compromised (used for indoor charging).
At a glance
- Usually lights the check-engine light
How it works
The control pilot charging ventilation switch reports whether the ventilation condition for charging is satisfied. This code sets when the module receives a signal outside the expected operating range, which can make charging authorization unreliable.
Common causes
Most likely first.
- Charging ventilation switch signal outside the expected range
- Damaged switch wiring or poor connector connection
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
How to diagnose it
- Save freeze-frame data and inspect charging live data for the ventilation switch reading and the conditions when it went out of range.
- Check the ventilation switch connector and harness for corrosion, looseness, moisture, or damaged insulation.
- Operate the switch using the manufacturer’s procedure and confirm whether its scan-tool reading changes smoothly and plausibly.
- Test the switch signal and circuit for poor connections or wiring damage, following the manufacturer’s service procedure.
- Compare the switch and circuit measurements with the manufacturer’s specification before suspecting the charging control module.
Common fixes
- Reseat or clean a loose or corroded switch connector.
- Repair damaged wiring or a poor terminal connection in the ventilation switch circuit.
- Replace the ventilation switch if its output remains outside the specified range.
- Repair or replace the charging control module only if the switch and wiring pass their tests.
Can I keep driving?
Driving is generally possible, but charging may be refused, interrupted, or limited until the ventilation signal is corrected. Do not bypass the ventilation requirement to start a charge session.
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.