P2552 Code - Throttle/Fuel Inhibit Circuit
Quick Answer
The Diesel Engine Power Monitor (DEPM) strategy resides in the Transmission Control Module (TCM) located inside the Powertrain Control Module (PCM). Common causes include Faulty Fuel Injector Control Module (FICM), Faulty Powertrain Control Module (PCM), Fuel Injector Control Module harness is open or shorted. 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 Fuel Injector Control Module (FICM), Faulty Powertrain Control Module (PCM), Fuel Injector Control Module harness is open or shorted.
- 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.
Code P2552 Description
Under normal engine idle operation the DEPM RPM value must always be higher than the engine RPM. In the event that the engine RPM does not exceed the DEPM limit, the DEPM disables the crankshaft and camshaft output signal sent to the PCM to the Fuel Injector Control Module (FICM).
What are the Possible Causes of the DTC P2552?
- Faulty Fuel Injector Control Module (FICM)
- Faulty Powertrain Control Module (PCM)
- Fuel Injector Control Module harness is open or shorted
- Fuel Injector Control Module circuit poor electrical connection
How to Fix the DTC P2552?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P2552 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- P2552 Acura — Throttle/Fuel Inhibit Circuit
- P2552 Dodge — Throttle/Fuel Inhibit Circuit
- P2552 Ford — Throttle/Fuel Inhibit Circuit
- P2552 Honda — Throttle/Fuel Inhibit Circuit
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
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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
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