P0489 Code - Exhaust Gas Recirculation Throttle Control Circuit 'A' Circuit Low

What Does P0489 Mean?

The poor running symptoms are consistent with a MAP sensor malfunction. In addition, in some cases, a bad MAP sensor will not throw a code. Again, the ELD code likely represents a separate wiring issue. When you see P0489 engine fault code on your engine code reader this description will help you.

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What are the common causes of P0489 ?

Several problems may cause a P0489 code including:

• Damaged, defective, or corroded wiring or connectors
• Possible short to ground
• Possible short to battery voltage
• Clogged EGR passages
• Clogged DPFE sensor passages
• Damaged or defective EGR system
• Damaged or defective EGR valve
• Damaged or defective EGR valve gasket
• Damaged or defective EGR control solenoid
• Damaged or defective EGR line
• Clogged MAP/MAF sensor
• Damaged or broken vacuum line/hose

How do you troubleshoot P0489 ?

If all testing has passed so far yet you still have the same code, check your scan tool and see if it can open and close the IMRC valve. Look for damage to the tank indicating impact that may have damaged the fuel pump or sender.

Process Tips

Diagnostic trouble code P0489 is not difficult to diagnose and repair. Thus, it always pays to have a qualified technician to look after your vehicle should this error code arise.

Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine. If other codes that relates to misfiring condition, lean running or air entering the engine is present, then you must first fix those error codes before P0489.

Fortunately, P0489 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

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