AutoCodes – Dodge – P2550 Dodge

P2550 Dodge Code - Torque Management Request Input Signal 'B' Low

Quick Answer

To improve shift feel, the Transmission Control Module (TCM) may request that the Engine Control Module (ECM) reduce engine torque during shift events. Common causes include Faulty Engine Control Module (ECM), Faulty Transmission Control Module (TCM), Engine Control Module (ECM) software update. 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: P2550 Dodge indicates Torque Management Request Input Signal 'B' Low.
Common causes: Common causes include Faulty Engine Control Module (ECM), Faulty Transmission Control Module (TCM), Engine Control Module (ECM) software update.
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.

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Code Popularity 3,077

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 18, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2550 Dodge Description

To improve shift feel, the Transmission Control Module (TCM) may request that the Engine Control Module (ECM) reduce engine torque during shift events. When such a request is received, the ECM responds by retarding the base ignition timing and notifying the TCM that the request has succeeded. If the ECM is unable to comply with the request, the ECM sends the TCM a message that the request has failed.
The torque reduction request is sent to the ECM through a communication network called the controller area network (CAN). Two circuits are used to communicate CAN data between the ECM and TCM.
A fault in the CAN will not cause the ECM to set the Diagnostic Trouble Codes (DTC). If a CAN fault occurs, other DTCs will set before this code.
The ECM set the OBDII code when the TCM receives a torque reduction failure message from the ECM.

OBDII Code P2550 Dodge - Torque Management Request Input Signal 'B' Low - AutoCodes.com — P2550 Dodge Code - Torque Management Request Input Signal 'B' Low

What does this mean?

What are the Possible Causes of the DTC P2550 Dodge?

Faulty Engine Control Module (ECM)
Faulty Transmission Control Module (TCM)
Engine Control Module (ECM) software update
Transmission Control Module (TCM) software update
Engine Control Module (ECM) harness is open or shorted
Engine Control Module (ECM) circuit poor electrical connection

How to Fix the DTC P2550 Dodge?

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 P2550 Dodge 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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Need Help with the Code?

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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 P2550 Dodge Code

1. What does the OBDII code P2550 mean for a Dodge vehicle?

P2550 indicates that the Torque Management Request Input Signal 'B' is reading a voltage that is lower than the manufacturerâ€™s specified range, suggesting a problem with the signal or related components.

2. What are the common symptoms of the P2550 code?

Symptoms may include reduced engine performance, activation of limp mode, poor acceleration, and the illumination of the check engine light.

3. What causes the P2550 code to appear in a Dodge vehicle?

Common causes include a faulty torque management sensor, damaged or corroded wiring, a malfunctioning powertrain control module (PCM), or a poor electrical connection.

4. Can I drive my Dodge with the P2550 code active?

While the vehicle may still be drivable, reduced performance and potential safety concerns make it advisable to address the issue promptly to avoid further damage.

5. How is the P2550 code diagnosed in a Dodge?

Diagnosis typically involves using an OBDII scanner to confirm the code, inspecting the torque management sensor and related wiring, checking for loose connectors, and performing voltage tests on the sensor circuit.

6. What repairs typically fix the P2550 code?

Repairs may include replacing the torque management sensor, repairing or replacing damaged wiring or connectors, and in rare cases, reprogramming or replacing the PCM.

7. How much does it cost to fix a P2550 code on a Dodge?

Repair costs vary but can range from $100 to $500 depending on whether the issue is with the sensor, wiring, or PCM.

8. Can a software update fix the P2550 code?

In some cases, a PCM software update may resolve the issue if itâ€™s related to incorrect programming. Consult your dealer or mechanic for confirmation.

9. What tools are needed to troubleshoot the P2550 code?

Tools typically include an OBDII scanner, a digital multimeter, and service manuals specific to your Dodge model.

10. Is the P2550 code specific to Dodge vehicles?

No, the P2550 code is a generic OBDII code applicable to many vehicles, but troubleshooting and repairs may vary depending on the Dodge model and year.