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P2553 OBD2: Throttle/Fuel Inhibit Circuit Range/Performance

P2553 OBD2: Throttle/Fuel Inhibit Circuit Range/Performance

When you encounter the P2553 OBD-II code, it signals a crucial issue regarding the throttle and fuel management system of your vehicle. Understanding this code is vital for proper diagnosis and repair.

What Does the P2553 Code Mean?

The P2553 code is defined as a Throttle/Fuel Inhibit Circuit Range/Performance. This indicates that the Fuel Injector Control Module (FICM) has detected a problem with the relationship between engine speed and power requested by the driver. If the engine speed exceeds what’s requested by the Engine Control Module (PCM), the FICM may disable fuel delivery, leading to engine shutdown.

What Causes the P2553 Code?

Several factors can trigger the P2553 code, including:

  • Crankshaft Position Sensor (CKP) failure
  • Fuel Injection Control Module (FICM) failure
  • Powertrain Control Module (PCM) failure
  • Wiring issues

What Are the Symptoms of the P2553 Code?

Drivers may notice the following symptoms when the P2553 code is present:

  • Engine may stall unexpectedly

How Serious Is the P2553 Code?

The P2553 code is classified as urgent. It indicates a significant malfunction that can lead to severe vehicle damage or pose risks to the driver and passengers. Immediate attention is necessary to avoid potential safety hazards.

How to Diagnose the P2553 Code

Diagnosing the P2553 code involves a systematic approach:

  1. Use an OBD-II scanner to confirm the P2553 code and check for any additional codes.
  2. Inspect wiring and connectors related to the FICM, CKP, and PCM for any visible damage.
  3. Test the functionality of the Crankshaft Position Sensor and FICM.
  4. Evaluate the PCM for proper operation and check for software updates.

Common Repairs for the P2553 Code

Repairs may vary based on the underlying issue. Common fixes include:

  • Replacing a faulty Crankshaft Position Sensor (CKP)
  • Repairing or replacing the Fuel Injection Control Module (FICM)
  • Addressing wiring issues or damaged connectors
  • Reprogramming or replacing the Powertrain Control Module (PCM)

How Much Does It Cost to Fix the P2553 Code?

The cost to repair the P2553 code can range from $100 to $1,500, depending on the specific issue and parts required. Simple wiring repairs may be inexpensive, while replacing the FICM or PCM can be more costly.

Can I Fix the P2553 Code Myself?

While some DIY enthusiasts may attempt to fix the P2553 code, it’s important to note that proper diagnosis requires specialized tools and knowledge. If you’re not experienced with automotive diagnostics, it’s advisable to seek professional help to ensure accurate repairs and avoid further complications.

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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