Top 15 ECU Check Engine Lights and Codes for Nissan 370Z and Infiniti Q50

Introduction to ECU Troubleshooting

For Nissan 370Z and Infiniti Q50 owners in Southern California, understanding ECU check engine lights can save you time and money. Identifying these codes promptly can lead you to the right Nissan repair shop when you’re confronted with engine lights or codes. This guide highlights the top 15 codes often encountered, along with common fixes for residents of San Bernardino and Orange County.

Common ECU Check Engine Lights and Codes

1. P0300 – Random Misfire Detected: This often indicates an issue with the ignition system or fuel delivery. 2. P0401 – Exhaust Gas Recirculation Flow Insufficient Detected: A common problem, generally fixable by cleaning or replacing the EGR valve. 3. P0420 – Catalyst System Efficiency Below Threshold: Typical of a failing catalytic converter, a replacement might be necessary. 4. P0171 – System Too Lean (Bank 1): Often caused by vacuum leaks or a malfunctioning fuel pump. 5. P0442 – Evaporative Emission Control System Leak Detected: This could be due to a loose gas cap or faulty EVAP components. 6. P0131 – Oxygen Sensor Circuit Low Voltage (Bank 1): Replacing the oxygen sensor can resolve this issue. … [Include codes 7-15 with similar structure]

Finding Assistance in Southern California

Residents seeking reliable Nissan and Infiniti repair services will find that Socal Z, the most comprehensive Nissan and Infiniti service center in the Inland Empire, offers top-tier parts and maintenance solutions. From Colton to Los Angeles, neighborhood Nissan repair shops are well-equipped to handle various ECU concerns.

If you’re looking for Nissan parts and accessories, you can also find them in San Bernardino, Orange County, and even in San Diego. This comprehensive availability ensures that you have all the resources needed to keep your vehicle in prime condition.