P2555 Fault Code

Throttle/Fuel Inhibit Circuit High

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

The P2555 fault code indicates a problem with the throttle/fuel inhibit circuit being high. This can lead to issues with how the engine controls fuel delivery, potentially causing poor engine performance or stalling. Understanding this fault code is essential for effective diagnosis and repair.

What are the symptoms of the P2555 code?

Common symptoms associated with the P2555 code may include:

• Engine performance issues, such as hesitation or acceleration problems
• Reduced fuel economy
• Engine stalling or difficulty starting
• Dashboard warning lights, especially the check engine light

What causes the P2555 code?

Several factors can lead to the P2555 code appearing, including:

• Faulty throttle position sensor
• Wiring issues, such as short circuits or damaged connectors
• Malfunctioning engine control unit (ECU)
• Issues with associated components, like the fuel pump relay

How to fix P2555?

To resolve the P2555 code, the following steps are typically recommended:

• Perform a visual inspection of wiring and connectors associated with the throttle and fuel circuit
• Test the throttle position sensor and replace if defective
• Check for and repair any short circuits or damaged wires
• Clear the fault code and conduct a test drive to ensure the issue is resolved