P23DE
Cylinder 4 Fuel Heater Control Circuit High
P23DE is an OBD-II diagnostic trouble code meaning: Cylinder 4 Fuel Heater Control Circuit High. Common causes: short circuit in fuel heater circuit, malfunction of the 4th cylinder fuel heater. Estimated repair cost: $17–56.
Symptoms
- Difficulty starting the engine in cold weather
- Unstable engine operation at idle
- Increased fuel consumption
- Check Engine Light Is On
- Reduced engine power
Causes
- Short circuit in fuel heater circuit
- Malfunction of the 4th cylinder fuel heater
- Problems with wiring harness or contacts
- Engine control unit malfunction
- Corrosion or oxidation of contacts
How to Fix
- Check fuel heater circuit for short circuit
- Test the resistance of the 4th cylinder heater
- Inspect the wiring harness and contacts for damage
- Check the operation of the engine control unit
- Replace faulty fuel heater if necessary
Related codes
Error P23DE by Vehicle Brand
FAQ
What does the P23DE code mean?
P23DE is an OBD-II diagnostic trouble code that indicates: Cylinder 4 Fuel Heater Control Circuit High
What causes a P23DE error code?
The most common causes of P23DE include: Short circuit in fuel heater circuit; Malfunction of the 4th cylinder fuel heater; Problems with wiring harness or contacts; Engine control unit malfunction.
How do I fix a P23DE diagnostic trouble code?
To fix P23DE: Check fuel heater circuit for short circuit. Test the resistance of the 4th cylinder heater. Inspect the wiring harness and contacts for damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P23DE?
Yes, but get it checked soon
How much does it cost to fix P23DE?
The estimated repair cost for P23DE is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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