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P0488 OBD2: Exhaust Gas Recirculation Throttle Control Circuit "A"

P0488 OBD2: Exhaust Gas Recirculation Throttle Control Circuit “A”

What Does the P0488 Code Mean?

The P0488 code indicates a problem within the Exhaust Gas Recirculation (EGR) throttle control circuit. Specifically, it refers to an electrical issue with the intake throttle actuator, which is responsible for opening and closing the throttle plate in an electronic throttle body.

What Causes the P0488 Code?

Several factors can trigger the P0488 code, including:

  • EGR throttle body assembly failure
  • Powertrain Control Module (PCM) failure
  • Wiring issues within the throttle control circuit

What Are the Symptoms of the P0488 Code?

Common symptoms associated with the P0488 code include:

  • Decreased engine performance
  • Potential stalls or rough idling
  • Check Engine Light illuminated

How Serious Is the P0488 Code?

The P0488 code is classified as moderate severity. While it may not pose an immediate threat to your vehicle’s safety or functionality, it is essential to get it diagnosed within a reasonable time frame to prevent further complications and maintain optimal engine performance.

How to Diagnose the P0488 Code

Proper diagnosis of the P0488 code involves:

  • Using an OBD-II scanner to confirm the fault code
  • Inspecting the EGR throttle body assembly and associated wiring for damage
  • Testing the intake throttle actuator and PCM functionality

Common Repairs for the P0488 Code

Repairs for the P0488 code may include:

  • Replacing the EGR throttle body assembly
  • Repairing or replacing damaged wiring in the throttle control circuit
  • Reprogramming or replacing the Powertrain Control Module (PCM)

How Much Does It Cost to Fix the P0488 Code?

The cost to repair the P0488 code can vary widely based on the underlying issue. On average, repairs may range from $100 to $800, depending on whether parts need to be replaced or if further diagnostics are required.

Can I Fix the P0488 Code Myself?

If you have automotive repair experience, you may be able to diagnose and resolve the P0488 code yourself, especially if it involves replacing accessible components like the throttle body assembly or fixing wiring issues. However, for those without experience, it is advisable to seek help from a professional mechanic.

About JC Landry

JC is the Senior Editor at eManualOnline.com, GarageSpot.com, and Drive-My.com, as well as the Webmaster of TheMechanicDoctor.com, only to name a few. He's been a certified Master Mechanic for 15 years, working for various car dealers and specialized repair shops before turning towards blogging about cars and EVs in the hope of helping the next generation of automotive technicians. He also loves cats, Johnny Cash and Subarus.

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