AutoCodes – Generic – U1009

U1009 Code - SCP Invalid Or Missing Data For Engine Torque

Quick Answer

This is a manufacturer-specific fault code and can be used for several different faults, depending upon what the manufacturer wants to use it for. Common causes include Faulty / intermittent ignition module, J1850 / SCP Bus wiring intermittently open, shorted to power or ground, Faulty / intermittent connection at the Powertrain Control Module (PCM). 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: U1009 indicates SCP Invalid Or Missing Data For Engine Torque.
Common causes: Common causes include Faulty / intermittent ignition module, J1850 / SCP Bus wiring intermittently open, shorted to power or ground, Faulty / intermittent connection at the Powertrain Control Module (PCM).
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 31,593

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 Apr 16, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code U1009 Description

This is a manufacturer-specific fault code and can be used for several different faults, depending upon what the manufacturer wants to use it for. The Powertrain Control Module (PCM) communicates over the Serial Communication Protocol (SCP) bus network or J1850 bus. This is a medium-speed bus communication system and is fault-tolerant, which means any type of intermittent/loose connection at these controllers will cause this code to set in memory, but will still operate, provided a data path is available. When the PCM is unable to communicate with any other controller at any time while the ignition switch is turned on, code U1009 will set. This is the typical reason for this code to set.

OBDII Code U1009 - SCP Invalid Or Missing Data For Engine Torque - AutoCodes.com — U1009 Code - SCP Invalid Or Missing Data For Engine Torque

What does this mean?

What are the Possible Causes of the DTC U1009?

Faulty / intermittent ignition module
J1850 / SCP Bus wiring intermittently open, shorted to power or ground
Faulty / intermittent connection at the Powertrain Control Module (PCM)
Faulty EGR Sensor

How to Fix the DTC U1009?

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 does this mean?

Code Tech Notes

This is typically an electrical wiring connection issue, either at the engine controller or at the sensors being monitored by the manufacturer.
It can occur if:
The wrong EGR sensor is installed on the vehicle. Verify with the manufacturer for the latest.
A bad ignition module is present.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U1009 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 U1009 code?

Need more information on how to fix the U1009 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1009 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U1009 Chrysler — LIN 2 Bus Steering Control Module Electrical Diagnostics
U1009 Dodge — LIN 2 Bus Steering Control Module Electrical Diagnostics
U1009 Ford — SCP Invalid Or Missing Data For Engine Torque
U1009 Jeep — LIN 2 Bus Steering Control Module Electrical Diagnostics
U1009 Lincoln — SCP Invalid Or Missing Data For Engine Torque
U1009 Mercury — SCP Invalid Or Missing Data For Engine Torque
U1009 RAM — LIN 2 Bus Steering Control Module Electrical Diagnostics

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 U1009 Code

1. What are common symptoms of OBDII code U1009 (SCP Invalid Or Missing Data For Engine Torque)?

- Common symptoms include engine misfires, loss of power, rough idling, and potential stalling.

2. What are possible causes of OBDII code U1009?

- Possible causes include faulty wiring or connectors in the SCP (Standard Corporate Protocol) network, issues with the Engine Control Module (ECM), or a malfunctioning sensor related to engine torque.

3. How can I diagnose the SCP network for U1009 code?

- Use a diagnostic scanner to check for communication errors within the SCP network, inspect wiring and connectors for any damage or corrosion, and ensure all modules are properly connected and functioning.

4. Can a bad sensor cause the U1009 code?

- Yes, a malfunctioning sensor related to engine torque, such as a crankshaft position sensor or throttle position sensor, can trigger the U1009 code.

5. How can I repair OBDII code U1009?

- Repair involves identifying and fixing any issues in the SCP network, repairing or replacing damaged wiring or connectors, and addressing any underlying sensor or ECM problems.

6. Will driving with the U1009 code cause further damage to my vehicle?

- While it is not recommended to drive with unresolved OBDII codes, continuing to drive with the U1009 code may lead to poor engine performance and potential damage if left unaddressed for an extended period.

7. Can a DIY enthusiast fix the U1009 code?

- Depending on your experience and access to tools, DIY enthusiasts may be able to diagnose and repair simple wiring or connector issues related to the U1009 code. However, complex ECM or sensor problems may require professional assistance.

8. Is the U1009 code a serious issue?

- The U1009 code should be addressed promptly to prevent potential engine performance issues and further damage. Ignoring the code may lead to more significant problems over time.

9. How long does it typically take to repair U1009?

- The repair time for the U1009 code can vary depending on the complexity of the issue and the availability of parts. Simple fixes like repairing wiring may take a few hours, while troubleshooting sensor or ECM problems could take longer.

10. Can resetting the OBDII system clear the U1009 code?

- Resetting the OBDII system may temporarily clear the U1009 code, but if the underlying issue is not resolved, the code is likely to reappear. It is crucial to diagnose and fix the root cause of the problem to prevent the code from returning.