P1644 Code - Traction Control Delivered Torque Output Circuit Conditions
Quick Answer
With the key on or engine running, brake not applied, Fuel system in closed loop, the Powertrain Control Module (PCM) detects an improper voltage level on the Delivered Torque Output circuit, conditions met for 10 seconds Common causes include Faulty Delivered Torque Output, Delivered Torque Output harness is open or shorted, Delivered Torque Output 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
- P1644 indicates Traction Control Delivered Torque Output Circuit Conditions.
- Common causes
- Common causes include Faulty Delivered Torque Output, Delivered Torque Output harness is open or shorted, Delivered Torque Output 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 P1644 Description
What are the Possible Causes of the DTC P1644?
- Faulty Delivered Torque Output
- Delivered Torque Output harness is open or shorted
- Delivered Torque Output circuit poor electrical connection
How to Fix the DTC P1644?
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 P1644 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
- P1644 Buick — Traction Control Delivered Torque Output Circuit Conditions
- P1644 Cadillac — Traction Control Delivered Torque Output Circuit Conditions
- P1644 Chevrolet — Traction Control Delivered Torque Output Circuit Conditions
- P1644 Chrysler — Incorrect Variant/Configuration
- P1644 Dodge — Incorrect Variant/Configuration
- P1644 Ford — Fuel Pump Speed Control Circuit Malfunction
- P1644 GMC — Traction Control Delivered Torque Output Circuit Conditions
- P1644 Honda — Motor Control Module Signal Malfunction
- P1644 Jeep — Incorrect Variant/Configuration
- P1644 Mercedes-Benz — Transmission Control Module Supply Voltage Low
- P1644 RAM — Incorrect Variant/Configuration
Frequently Asked Questions about P1644 Code
What does the OBDII code P1644 mean?
Code P1644 indicates a problem with the traction control system, specifically an issue in the delivered torque output circuit that may affect communication between the traction control module and the engine control module.
What are common symptoms of code P1644?
Symptoms may include the traction control or ABS warning light illuminating, reduced engine power, poor traction control performance, or hesitation during acceleration.
What causes the P1644 code to appear?
Common causes include damaged wiring or connectors in the traction control circuit, a faulty traction control module, or communication issues between the traction control system and the engine control module.
Can I drive my vehicle with code P1644 active?
Driving with code P1644 may be possible, but it is not recommended as it can affect traction control and potentially compromise vehicle safety during slippery or unstable driving conditions.
How can I diagnose the P1644 code?
Diagnosing this code typically involves inspecting the wiring and connectors associated with the traction control circuit, testing the traction control module, and checking for other related fault codes.
What tools are needed to diagnose code P1644?
You’ll need an OBDII scanner to retrieve the code, a multimeter to test electrical components, and potentially a wiring diagram to check circuit connections.
How can I fix the P1644 code?
Repairs may include replacing damaged wiring or connectors, repairing or replacing the traction control module, or addressing communication issues between the control modules.
How much does it cost to repair code P1644?
Repair costs can vary widely depending on the cause but may range from $100 to $500 for wiring repairs, with higher costs if module replacement is necessary.
Can a faulty ECM cause code P1644?
Yes, a malfunctioning engine control module (ECM) can disrupt communication with the traction control system, potentially triggering code P1644.
Will clearing the P1644 code fix the issue?
Clearing the code may temporarily turn off the warning light, but the underlying issue must be resolved to prevent the code from returning.
Discuss the causes and fixes for P1644 OBDII Code
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