P0623
Generator Lamp Control Circuit
P0623 is an OBD-II diagnostic trouble code meaning: Generator Lamp Control Circuit. Common causes: burnt out battery warning light, lamp control circuit wire break. Estimated repair cost: $2–22.
Symptoms
- The Check Engine light comes on
- The battery lamp does not light up when there is a charging fault
- Or the battery light is constantly on for no reason
- Incorrect operation of the charging indication system
- No visual warning of problems with the generator
Causes
- Burnt out battery warning light
- Lamp control circuit wire break
- Lamp wire short circuit to ground
- Instrument panel unit malfunction
- Lamp control ECU output internal fault
How to Fix
- Check the battery indicator lamp on the dashboard - replace if burnt out
- Measure the voltage at the lamp control connector when the ignition is turned on.
- Check the wiring from the ECU to the instrument panel for opens and shorts
- Check the instrument panel unit
- If external circuits are in good working order - ECU diagnostics
Related codes
Error P0623 by Vehicle Brand
FAQ
What does the P0623 code mean?
P0623 is an OBD-II diagnostic trouble code that indicates: Generator Lamp Control Circuit
What causes a P0623 error code?
The most common causes of P0623 include: Burnt out battery warning light; Lamp control circuit wire break; Lamp wire short circuit to ground; Instrument panel unit malfunction.
How do I fix a P0623 diagnostic trouble code?
To fix P0623: Check the battery indicator lamp on the dashboard - replace if burnt out. Measure the voltage at the lamp control connector when the ignition is turned on.. Check the wiring from the ECU to the instrument panel for opens and shorts. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0623?
Yes, but get it checked soon
How much does it cost to fix P0623?
The estimated repair cost for P0623 is $2–22. Actual cost depends on your vehicle, location, and labor rates.
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