P2782 Fault Code

Downshift Switch Circuit Intermittent/Erratic

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2782 fault code indicates an issue with the downshift switch circuit, which may be experiencing intermittent or erratic behavior. This condition can affect the transmission's ability to downshift properly, potentially leading to poor driving performance.

What are the symptoms of the P2782 code?

Symptoms associated with a P2782 fault code can include:

• Unresponsive or erratic downshifting when accelerating.
• Warning lights on the dashboard, such as the Check Engine light.
• Poor fuel economy due to improper gear shifting.
• The engine may hesitate or stumble when shifting gears.

What causes the P2782 code?

The most common causes of a P2782 fault code include:

• Faulty downshift switch.
• Poor electrical connections or wiring issues in the downshift switch circuit.
• Defective transmission control module (TCM).
• Short-circuits or open circuits within the circuit harness.
• Corroded connectors or damaged wiring harnesses.

How to fix P2782?

To resolve a P2782 fault code, consider the following steps:

• Inspect and clean the downshift switch and its wiring connections.
• Check for continuity and voltage in the downshift switch circuit.
• Replace the downshift switch if it's found to be faulty.
• Repair or replace damaged wiring or connectors.
• If the issue persists, check or replace the transmission control module (TCM).