P23DB
Cylinder 3 Fuel Heater Control Circuit Low
P23DB is an OBD-II diagnostic trouble code meaning: Cylinder 3 Fuel Heater Control Circuit Low. Common causes: cylinder 3 fuel heater malfunction, open or short circuit in control circuit. Estimated repair cost: $17–56.
Symptoms
- Problems starting the engine in cold weather
- Unstable idling
- Increased fuel consumption
- Check Engine Light Illuminates
- Reduced engine power
Causes
- Cylinder 3 fuel heater malfunction
- Open or short circuit in control circuit
- Poor contact in the heater connector
- Faulty relay or circuit fuse
- Problems with the engine control unit (ECU)
How to Fix
- Check the integrity of the fuel heater (resistance)
- Inspect the wiring harness and connectors for damage.
- Check voltage on control circuit
- Replace faulty heater if necessary
- Test and, if necessary, replace the engine control unit
Related codes
Error P23DB by Vehicle Brand
FAQ
What does the P23DB code mean?
P23DB is an OBD-II diagnostic trouble code that indicates: Cylinder 3 Fuel Heater Control Circuit Low
What causes a P23DB error code?
The most common causes of P23DB include: Cylinder 3 fuel heater malfunction; Open or short circuit in control circuit; Poor contact in the heater connector; Faulty relay or circuit fuse.
How do I fix a P23DB diagnostic trouble code?
To fix P23DB: Check the integrity of the fuel heater (resistance). Inspect the wiring harness and connectors for damage.. Check voltage on control circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P23DB?
Yes, but get it checked soon
How much does it cost to fix P23DB?
The estimated repair cost for P23DB is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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