P0487 Fault Code

Exhaust Gas Recirculation Throttle Position Control Circuit

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0487 code indicates a problem with the Exhaust Gas Recirculation (EGR) throttle position control circuit. This system is crucial for reducing emissions and enhancing fuel efficiency by recirculating a portion of the exhaust gases back into the engine's intake. When the control circuit malfunctions, it can lead to poor engine performance and increased emissions.

What are the symptoms of the P0487 code?

Symptoms associated with the P0487 code may include:

• Illuminated check engine light
• Rough idling or unstable engine performance
• Decreased fuel efficiency
• Increased emissions
• Engine stalling or hesitation during acceleration

What causes the P0487 code?

Common causes for the P0487 code include:

• Faulty EGR throttle position sensor
• Damaged wiring or connectors in the EGR circuit
• Malfunctioning EGR valve
• Issues with the engine control module (ECM)
• Vacuum leaks affecting the EGR system

How to fix P0487?

To resolve the P0487 code, consider the following steps:

• Inspect the EGR throttle position sensor and replace if faulty.
• Check for damaged wiring or poor connections in the EGR circuit and repair as necessary.
• Test the EGR valve for proper operation and replace if defective.
• Clear the fault code and conduct a test drive to see if the code returns.
• If issues persist, further diagnostics may be needed, possibly involving the ECM.