P23CD

Symptoms

• Difficulty starting the engine in cold weather
• Reduced engine power at low temperatures
• Check Engine indicator on the dashboard
• Possible increase in fuel consumption in cold conditions
• No noticeable symptoms in warm weather

Causes

• Open or short circuit in the fuel heating module circuit
• Malfunction of the fuel heating module itself
• Problems with wiring harness or contacts
• Engine control unit malfunction
• Corrosion or oxidation of contacts

How to Fix

1. Check the continuity of the fuel heating module circuit
2. Check the resistance and functionality of the heating module
3. Inspect and clean all electrical contacts
4. Check power and ground circuit
5. If necessary, replace the fuel heating module

Related codes

Error P23CD by Vehicle Brand