U1113 - SCP Invalid or Missing Data for Primary Id

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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U1113 Possible Causes

  • Faulty / intermittent ignition switch connections
  • J1850 / SCP / CAN Bus wiring intermittently open, shorted to power or ground
  • Faulty / intermittent connection at the Powertrain Control Module (PCM)
  • Faulty / intermittent connection at the Airbag Control Module

First diagnose U1113 code

    Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded terminals.

U1113 Tech Notes

This is typically an electrical wiring connection issue, either at the engine controller or at the sensors being monitored by the manufacturer.
You may notice:
The engine may or may not start.
The horn honks all the time.
Stepping on the brake pedal stops either of these 2 items from happening.
If so, disconnect clock spring connector from base of steering column.
CAUTION! The AIRBAG is hooked up to it! Make sure you do this with the battery disconnected! Afterwards, hook battery back up and see if problems are gone. If so, it’s a shorted clock spring.

Cost of diagnosing the U1113 code

    Labor: 1.0

    The cost of diagnosing the U1113 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

When is the U1113 code detected?

When the PCM is unable to communicate with any other controller on the bus network at any time while the ignition switch is in the “Run” position.

U1113 Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Engine cranks but may not start – may be intermittent
  • Horn may sound all the time
  • Stepping on brake pedal stops all problems

U1113 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. Controllers communicate over the Serial Communication Protocol (SCP) bus network, also known as J1850 bus, or Controller Area Network or CAN Bus. These bus communication systems may or may not be fault tolerant, which means any type of intermittent/loose connection between these controllers could cause communication to stop. When these controllers are unable to communicate with each other at any time while the ignition switch is turned on, code U1113 will set.
OBDII Code U1113 - SCP Invalid or Missing Data for Primary Id - AutoCodes.com

U1113 More Information

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U1113 Information for specific makes

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U1113 Comments

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