P1EF7
Battery Charger Control Module Ignition On/Start Switch Circuit High Voltage
P1EF7 is an OBD-II diagnostic trouble code meaning: Battery Charger Control Module Ignition On/Start Switch Circuit High Voltage. Common causes: short circuit in ignition/starter circuit, charging module relay malfunction. Estimated repair cost: $17–89.
Symptoms
- Problems starting the engine
- Check engine light is on
- Unstable operation of the charging system
- Reduced battery charging efficiency
Causes
- Short circuit in ignition/starter circuit
- Charging module relay malfunction
- Wiring Harness Problems
- Battery charging module malfunction
- Problems with the ECU
How to Fix
- Check the integrity of the wiring harness
- Check the operation of the charging module relay
- Measure the voltage in the ignition/starter circuit
- Check and, if necessary, replace the charging module
- Scan the ECU for errors
Related codes
FAQ
What does the P1EF7 code mean?
P1EF7 is an OBD-II diagnostic trouble code that indicates: Battery Charger Control Module Ignition On/Start Switch Circuit High Voltage
What causes a P1EF7 error code?
The most common causes of P1EF7 include: Short circuit in ignition/starter circuit; Charging module relay malfunction; Wiring Harness Problems; Battery charging module malfunction.
How do I fix a P1EF7 diagnostic trouble code?
To fix P1EF7: Check the integrity of the wiring harness. Check the operation of the charging module relay. Measure the voltage in the ignition/starter circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1EF7?
Yes, but get it checked soon
How much does it cost to fix P1EF7?
The estimated repair cost for P1EF7 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat