Volkswagen P1781: Engine Torque Reduction Open/Short to Ground
Is your scanner showing Volkswagen P1781?
No worries. We'll show you what it means and how to deal with it.
Volkswagen P1781: Engine Torque Reduction Open/Short to Ground
OVERVIEWWhat Does The Volkswagen P1781 Code Mean?
Key on or engine started, Self-Test enabled, and the ECM detected the Transmission Control Switch (TCS) was out of range during the test and a signal was not received.
Note: The seal on the ATF level plug must always be replaced if the ATF level is check
What Are The Potential Causes Of The Volkswagen P1781 Code?
- Check ATM fluid (if applicable)
- The TCM has failed
- ECM has failed
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> Set of 6 Liters Automatic Transmission Fluid Compatible with VW
>>> Volkswagen Engine Control Module
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Volkswagen P1781, DTCDECODE.
