P23D6
Cylinder 2 Fuel Heater Control Circuit High
P23D6 is an OBD-II diagnostic trouble code meaning: Cylinder 2 Fuel Heater Control Circuit High. Common causes: short circuit in heater control circuit, cylinder 2 fuel heater malfunction. Estimated repair cost: $17–56.
Symptoms
- Difficulty starting the engine in cold weather
- Unstable engine operation
- Increased fuel consumption
- Check engine light comes on
- Reduced engine power
Causes
- Short circuit in heater control circuit
- Cylinder 2 fuel heater malfunction
- Damaged wiring or poor contact
- Faulty relay or fuse
- Problems with the engine control unit (ECU)
How to Fix
- Check the integrity of the fuses and relays of the heater circuit
- Inspect wiring and connectors for damage
- Check the resistance of the cylinder 2 fuel heater
- Check control circuit voltage
- If necessary, replace the fuel heater or repair the wiring
Related codes
Error P23D6 by Vehicle Brand
FAQ
What does the P23D6 code mean?
P23D6 is an OBD-II diagnostic trouble code that indicates: Cylinder 2 Fuel Heater Control Circuit High
What causes a P23D6 error code?
The most common causes of P23D6 include: Short circuit in heater control circuit; Cylinder 2 fuel heater malfunction; Damaged wiring or poor contact; Faulty relay or fuse.
How do I fix a P23D6 diagnostic trouble code?
To fix P23D6: Check the integrity of the fuses and relays of the heater circuit. Inspect wiring and connectors for damage. Check the resistance of the cylinder 2 fuel heater. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P23D6?
Yes, but get it checked soon
How much does it cost to fix P23D6?
The estimated repair cost for P23D6 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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