Engine-Codes - Generic - P1780

P1780 Code - Transmission Control Switch Out of Self-Test Range

- Code Popularity: 63,089 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
ChatAC AutoCodes.com AI Chat

What are the Possible Causes of the DTC P1780?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Transmission Control Switch (TCS) not cycled during the self-test
  • Faulty Transmission Control Switch
  • Transmission Control Switch harness is open or shorted
  • Transmission Control Switch circuit poor electrical connection
⚠ Does your Car have Safety Recalls? → Check here

How to Fix the DTC P1780?

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 connector pins.

Search for P1780 Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P1780 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the P1780 Code Mean?

The Transmission Control Switch (TCS) is a momentary contact switch that is located on the end of the transmission control selector lever. Pushing the TCS will either disengage or engage the overdrive function of the transmission. During Key ON Engine Running (KOER) self-test the TCS must be cycled, the Diagnostic Trouble Code (DTC) will set anytime Powertrain Control Module (PCM) detects a TCS out of self-test range.

P1780 Code - Transmission Control Switch Out of Self-Test Range

Need more Information on the Code?

Need more information on how to fix the P1780 code? Get Access to Factory Service Manuals

Code P1780 Information for Specific Makes

Need Help with the Code?

Get the P1780 code diagnosed by a professional: Find a repair shop in your area