Engine-CodesGeneric – P2552

P2552 Code - Throttle/Fuel Inhibit Circuit

Quick Answer

The P2552 diagnostic trouble code refers to an issue with the throttle/fuel inhibit circuit in the vehicle. Common causes include Faulty throttle position sensor, Wiring or electrical issues in the throttle/fuel inhibit circuit, Fuel system problems. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P2552 indicates Throttle/Fuel Inhibit Circuit.
Common causes
Common causes include Faulty throttle position sensor, Wiring or electrical issues in the throttle/fuel inhibit circuit, Fuel system problems.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Aug 30, 2024
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Code P2552 Description

The P2552 diagnostic trouble code refers to an issue with the throttle/fuel inhibit circuit in the vehicle. This code typically indicates a problem with the circuit responsible for controlling the throttle position and fuel delivery, which can have a significant impact on the vehicle's performance. The throttle/fuel inhibit circuit is crucial for regulating the engine's speed and power output, so any malfunction in this circuit can lead to poor engine performance, decreased fuel efficiency, and potentially unsafe driving conditions.

OBDII Code P2552 - Throttle/Fuel Inhibit Circuit
P2552 Code - Throttle/Fuel Inhibit Circuit

Common Causes of P2552

  1. Faulty throttle position sensor
  2. Wiring or electrical issues in the throttle/fuel inhibit circuit
  3. Fuel system problems
  4. ECM (Engine Control Module) malfunction
  5. Mechanical issues with the throttle body

Symptoms of P2552

  1. Engine hesitation or stalling
  2. Reduced engine power
  3. Difficulty accelerating
  4. Check Engine Light illuminated
  5. Fuel efficiency issues

How to Fix P2552

  1. Diagnose the specific cause of the P2552 code using a diagnostic scanner
  2. Inspect the throttle position sensor for any faults or malfunctions
  3. Check the wiring and connections in the throttle/fuel inhibit circuit for any damage or corrosion
  4. Test the fuel system components for proper operation
  5. Replace any faulty components, such as the throttle position sensor or ECM, and clear the code from the vehicle's computer

Cost to Fix P2552

The cost of repairing the P2552 code can vary depending on the specific cause of the issue and the make and model of the vehicle. On average, the repair for this code can range from $200 to $500, including parts and labor. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to check with local shops for a more accurate estimate.

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Code P2552 Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2552 Code

1. What are the common symptoms of OBDII code P2552 (Throttle/Fuel Inhibit Circuit)?

- Common symptoms include reduced engine power, hesitation during acceleration, and the vehicle going into limp mode.

2. What are the possible causes of OBDII code P2552?

- Possible causes include a faulty throttle position sensor, issues with the throttle body, wiring or connection problems, or a malfunctioning engine control module (ECM).

3. How can I diagnose OBDII code P2552?

- Diagnosis typically involves using a scan tool to read the code, checking the throttle position sensor's voltage and signal, inspecting the throttle body for any damage, and testing the wiring and connections.

4. Can I drive with OBDII code P2552 present?

- It is not recommended to drive with this code present, as it can lead to unsafe driving conditions and potential engine damage. It is best to address the issue promptly.

5. How can I repair OBDII code P2552?

- Repair methods may include replacing the throttle position sensor, repairing or replacing damaged wiring or connections, cleaning or replacing the throttle body, or reprogramming the ECM.

6. Is OBDII code P2552 a serious issue?

- While the severity may vary depending on the root cause, it is generally considered a serious issue that requires attention to prevent further damage to the vehicle.

7. Can a DIY enthusiast fix OBDII code P2552?

- Depending on their skill level and access to tools, a DIY enthusiast may be able to address simple causes of this code, such as checking and cleaning connections or replacing the throttle position sensor.

8. How much does it cost to repair OBDII code P2552 at a mechanic?

- The cost of repair can vary depending on the cause of the code, but it may range from $100 to $500 or more, including parts and labor.

9. Will resetting the OBDII code P2552 make it go away permanently?

- Resetting the code may temporarily clear it, but if the underlying issue is not addressed, the code is likely to reappear once the problem resurfaces.

10. How long does it take to repair OBDII code P2552?

- The repair time can vary based on the specific cause and complexity of the issue. It may take anywhere from 1 to 4 hours or more to diagnose and fix the problem.

Discuss the causes and fixes for P2552 OBDII Code

  • 2003 f250 60 was running right after cab off head gasket up date with are studs it's running really good for a few test drives then started to miss and now won't start the injectors don't seam to be getting any power to them but film power is good got codes. That 3 4 5 7 glow plugs circuits open and p2552 Throttle/fuel inhibit circuit any one got any ideas