00537

00537 - Lambda (Oxygen Sensor) Regulation

00537 - Lambda (Oxygen Sensor) Regulation: Upper Limit

Possible Symptoms

• Lambda Control inactive
• Engine running rough

Possible Causes

• Wiring and/or Connector(s) from/to Lambda Sensor(s) faulty
• Lambda Control/Sensor(s) faulty
• Injector(s) faulty/blocked
• Fuel Pressure Regulator faulty
• Fuel Pump faulty
• Fuel Tank empty
• Vacuum/air leaks

Possible Solutions

• Check Lambda Control/Sensors
• Check/Repair Wiring and/or Connector(s) from/to Lambda Sensor(s)
• Check/Replace/Clean Injector(s)
• Check/Replace Fuel Pressure Regulator
• Check/Replace Fuel Pump
• Check Fuel Level
• Vacuum/smoke test hoses/valves and replace leaking ones

00537 - Lambda (Oxygen Sensor) Regulation: Lower Limit

Possible Symptoms

• Lambda Control inactive
• Engine running rough

Possible Causes

• Activated Charcoal Filter Solenoid Valve 1 (N80) leaking/sticking
• Injector faulty (not closing completely)
• Fuel Pressure Regulator faulty

Possible Solutions

• Check/Replace Activated Charcoal Filter Solenoid Valve 1 (N80)
• Check/Replace/Clean Injector(s)
• Check Fuel Pressure Regulator