P2555 Cadillac Code - Throttle Actuator Control Inhibit Circuit High Voltage
Quick Answer
The Powertrain Control Module (PCM) receives Accelerator Pedal Position (APP) sensor information and calculates the desired throttle position. Common causes include Faulty Throttle Control Actuator (TAC) module (part of the Throttle Body Assembly), Throttle Control Actuator Module harness is open or shorted, Throttle Control Actuator Module circuit poor electrical connection. 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
- P2555 Cadillac indicates Throttle Actuator Control Inhibit Circuit High Voltage.
- Common causes
- Common causes include Faulty Throttle Control Actuator (TAC) module (part of the Throttle Body Assembly), Throttle Control Actuator Module harness is open or shorted, Throttle Control Actuator Module circuit poor electrical connection.
- 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 P2555 Cadillac Description
What are the Possible Causes of the DTC P2555 Cadillac?
- Faulty Throttle Control Actuator (TAC) module (part of the Throttle Body Assembly)
- Throttle Control Actuator Module harness is open or shorted
- Throttle Control Actuator Module circuit poor electrical connection
How to Fix the DTC P2555 Cadillac?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P2555 Cadillac 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.
Need more information about the P2555 Cadillac code?
Need more information on how to fix the P2555 Cadillac code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2555 Cadillac code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P2555 Cadillac Code
1. What does the OBDII code P2555 mean on a Cadillac?
P2555 indicates a high voltage issue in the Throttle Actuator Control (TAC) Inhibit Circuit, which may affect the throttle system's functionality.
2. What are the common symptoms of the P2555 code?
Symptoms may include reduced engine power, poor acceleration, an illuminated check engine light, and the vehicle entering "limp mode."
3. What causes the P2555 code to appear?
Common causes include a faulty throttle actuator control module, damaged wiring or connectors in the TAC circuit, or an issue with the powertrain control module (PCM).
4. How is the P2555 code diagnosed?
A technician will inspect the TAC circuit wiring and connectors, check for proper voltage, and use a scan tool to monitor throttle system performance and confirm the issue.
5. Can I drive my car with the P2555 code?
Driving with the P2555 code is not recommended, as it can lead to reduced engine performance and potentially unsafe driving conditions.
6. How can the P2555 code be fixed?
Repairs may involve replacing damaged wiring or connectors, repairing or replacing the throttle actuator control module, or reprogramming the PCM if necessary.
7. What tools are needed to troubleshoot the P2555 code?
A scan tool, multimeter, and wiring diagrams for the throttle actuator control circuit are typically required for diagnosis.
8. How much does it cost to fix the P2555 code on a Cadillac?
Repair costs can vary widely depending on the cause, ranging from $100 for minor wiring repairs to $1,000 or more for throttle actuator or PCM replacement.
9. Can a dirty throttle body cause the P2555 code?
While a dirty throttle body is not a direct cause, it can contribute to throttle-related issues that may trigger the code in some cases.
10. Will clearing the P2555 code solve the problem?
Clearing the code may temporarily turn off the check engine light, but the underlying issue must be addressed to prevent the code from returning.
Discuss the causes and fixes for P2555 Cadillac OBDII Code
Code P2555 Cadillac comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
