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Engine-Codes – Generic – C1094

C1094 Code - Torque Request Reject Status

Quick Answer

The diagnostic code C1094 indicates a torque request reject status, which means that the vehicle's engine control module (ECM) has detected a problem with the requested torque output. Common causes include Faulty transmission control module (TCM), Wiring or connector issues between control modules, ECM software malfunction. 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
C1094 indicates Torque Request Reject Status.
Common causes
Common causes include Faulty transmission control module (TCM), Wiring or connector issues between control modules, ECM software malfunction.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code C1094 Description

The diagnostic code C1094 indicates a torque request reject status, which means that the vehicle's engine control module (ECM) has detected a problem with the requested torque output. This code is often associated with issues related to the transmission, drivetrain, or engine performance. When this code is triggered, it can affect the vehicle's overall performance, including acceleration, fuel efficiency, and overall drivability.

OBDII Code C1094 - Torque Request Reject Status
C1094 Code - Torque Request Reject Status

Common Causes of C1094

  1. Faulty transmission control module (TCM)
  2. Wiring or connector issues between control modules
  3. ECM software malfunction
  4. Sensor malfunction, such as the throttle position sensor or transmission speed sensor
  5. Mechanical issues in the transmission or drivetrain components

Symptoms of C1094

  1. Hesitation or jerking during acceleration
  2. Rough shifting or difficulty changing gears
  3. Engine stalling or loss of power
  4. Check engine light illuminated on the dashboard
  5. Reduced fuel efficiency

How to Fix C1094

  1. Perform a thorough diagnostic scan to retrieve the specific trouble codes and identify the root cause of the issue.
  2. Inspect and test the TCM, ECM, and related wiring and connectors for any faults or damage.
  3. Check and replace any faulty sensors, such as the throttle position sensor or transmission speed sensor.
  4. Update the ECM software to the latest version to address any software glitches or bugs.
  5. If necessary, repair or replace any mechanical components in the transmission or drivetrain that may be causing the issue.

Cost to Fix C1094

The typical repair costs for addressing the torque request reject status can vary depending on the specific cause of the issue. On average, you can expect to pay anywhere from $200 to $800 for parts and labor. However, it's important to note that the actual costs may vary based on factors such as the location of the repair shop, the make and model of the vehicle, and the extent of the repairs needed. Diagnostic time and labor rates at auto repair shops typically range from $80 to $150 per hour, so it's advisable to check with local shops for a more accurate estimate.

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Code C1094 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 C1094 Code

1. What are the common symptoms of OBDII code C1094 (Torque Request Reject Status)?

- Common symptoms include reduced engine power, hesitation or stalling during acceleration, and an illuminated check engine light.

2. What are the possible causes of OBDII code C1094?

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

3. How can I diagnose the OBDII code C1094?

- Diagnosis typically involves using a professional OBDII scanner to read the code, checking for related trouble codes, and conducting thorough visual and wiring inspections.

4. Can I drive my vehicle with OBDII code C1094?

- It is not recommended to drive your vehicle with this code as it may lead to further damage and potential safety hazards. It's best to address the issue promptly.

5. How can I repair OBDII code C1094?

- Repair options may include replacing the throttle position sensor, repairing or replacing damaged wiring, recalibrating the electronic throttle control system, or reprogramming the ECM.

6. Is it possible to clear OBDII code C1094 without fixing the underlying issue?

- Clearing the code without addressing the root cause is not advised, as the problem will likely resurface, leading to potential safety risks and further damage to the vehicle.

7. Can a DIY enthusiast fix OBDII code C1094 at home?

- While some simpler repairs like checking for loose connections or replacing the throttle position sensor can be done at home, diagnosing and repairing complex issues may require professional assistance.

8. How much does it typically cost to repair OBDII code C1094?

- The cost of repairs can vary depending on the specific cause of the code, parts needed, and labor costs. It's best to consult a mechanic for an accurate estimate.

9. Are there any preventive measures to avoid OBDII code C1094 in the future?

- Regular maintenance, such as checking and cleaning throttle components, inspecting wiring harnesses for damage, and keeping the ECM updated, can help prevent issues leading to this code.

10. How urgent is it to address OBDII code C1094?

- It is recommended to address this code promptly to prevent potential drivability issues, safety hazards, and further damage to the vehicle.

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