1. What is P0230?

P0230 refers to a Fuel Pump Relay Primary Circuit Malfunction. The ECM monitors voltage in the relay circuit that powers the fuel pump. If it detects abnormal voltage, P0230 is triggered.

2. Common Causes

• Faulty fuel pump relay
• Damaged or corroded wiring/connectors
• Blown fuse in fuel pump circuit
• Failed fuel pump driver module (Ford Focus, Chevrolet Malibu cases)
• ECM fault reporting incorrect voltage

3. Key Symptoms

• Engine cranks but won’t start
• Intermittent stalling while driving
• Check Engine Light with code P0230
• No fuel pressure detected at rail

4. Models Prone to P0230

• Ford: Focus, Escape, F-150 (2015–2023)
• Chevrolet: Malibu, Equinox, Silverado (2016–2023)
• Volkswagen: Jetta, Passat, Tiguan (2015–2023)

5. Diagnostic Steps with UR800

1. Scan with UR800 for P0230 and related fuel system codes
2. Check live fuel pump voltage and relay status
3. Inspect wiring/relay/fuses for continuity
4. Perform fuel pressure test with UR800 data stream
5. Check ECM outputs and updates if needed

6. Fixes & Execution

• Replace faulty fuel pump relay
• Repair or replace damaged wiring/connectors
• Replace fuel pump driver module if failed
• Update ECM calibration if TSB applies

7. Repair Costs & Safety Tips

• Fuel Pump Relay Replacement: $50–$120
• Wiring repair: $80–$200
• Fuel Pump Driver Module: $150–$400
• Labor: $100–$200

8. Preventive Maintenance

• Inspect relay and wiring every 20,000 miles
• Keep connectors clean and dry
• Check fuel pressure with ICARZONE UR800 during service

9. FAQ

10. Summary

P0230 indicates a fuel pump relay primary circuit malfunction, common in Ford, Chevrolet, and Volkswagen models. Use the ICARZONE UR800 to scan, test voltage, and confirm fuel system performance before replacing components.