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AutoCodes - Generic - U1178

U1178 Code - Invalid or Missing Data For Climate Control

- Code Popularity: 4,461 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC U1178?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Heating, Ventilation, and Air-Conditioning (HVAC) Module
  • Heating, Ventilation, and Air-Conditioning (HVAC) Module harness is open or shorted
  • Heating, Ventilation, and Air-Conditioning (HVAC) Module circuit poor electrical connection
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How to Fix the DTC U1178?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U1178 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code U1178 Description

The Powertrain Control Module (PCM) monitors the Heating, Ventilation, and Air-Conditioning (HVAC) Module. The PCM sets the OBDII code when the HVAC Module is not to factory specifications.

OBDII Code U1178 - Invalid or Missing Data For Climate Control - AutoCodes.com
U1178 Code - Invalid or Missing Data For Climate Control

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Information for Specific Makes

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Code U1178 comments

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