00537

00537 - Lambda (Oxygen Sensor) Regulation

00537 - Lambda (Oxygen Sensor) Regulation: Upper Limit

Possible Symptoms

• No Lambda control
  
• Engine running problems
  

Possible Causes

• Short to Ground
  
• Injector defective (blocked)
  
• Fuel pressure regulator defective
  
• Fuel pump defective
  
• Fuel tank empty
  

Possible Solutions

• Check Lambda probe and Lambda control
  
• Check injectors (N30...N33)
  
• Check fuel pressure regulator
  
• Check fuel pump
  
• Check fuel level in fuel tank
  
  

00537 - Lambda (Oxygen Sensor) Regulation: Lower Limit

Possible Causes

• Activated charcoal filter solenoid valve 1 (N80) leaking/sticking
  
• Injector defective (not closing completely)
  
• Fuel pressure regulator defective
  

Possible Solutions

• Check charcoal filter solenoid valve 1 (N80)
  
• Check injectors (N30...N33)
  
• Check fuel pressure regulator