P0790 Code - Normal/Performance Switch Circuit Malfunction

What does P0790 Mean?

The Transmission Control Module (TCM) monitors the Normal/Performance Switch signal. The TCM sets the OBDII code when the Normal/Performance Switch is not to factory specifications.

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What are the common causes of P0790 ?

• Fuel with a large percentage of sulfur will clog the DPF quickly
• The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
• Dirty air cleaner element Damaged DPF

How do you troubleshoot P0790 ?

The most common repairs for a P0790 are as follows:

• Cleaning the transmission mode switch
• Replacing the transmission mode switch
• Repairing damaged wiring for the transmission mode switch

Searches related to P0790 Code - Normal/Performance Switch Circuit Malfunction

• P0790
• P0791