Gear Shift Direction Circuit Low

What it means

P2794 is stored when the engine control module measures a voltage in the Gear Shift Direction circuit that stays below the expected minimum. In practice this points to a short to ground, a damaged wire or a failed component rather than a mechanical problem.

This entry is compiled automatically from the standard definition and typical diagnostic practice for this type of fault. A detailed, reviewed article is in preparation.

Symptoms

• Check engine light on
• Rough or unstable idle
• Hesitation or poor acceleration
• Increased fuel consumption
• Possible limp mode with reduced power

Common causes

1. Damaged, chafed or corroded wiring in the Gear Shift Direction circuit
2. Corroded, loose or water-damaged connector terminals
3. Failed Gear Shift Direction component (sensor, solenoid or actuator)
4. Poor ground connection for the module or component
5. Faulty control module driver (rare, confirm all else first)

How to diagnose

1. Read freeze frame data and note when the code set (cold start, under load, after rain)
2. Inspect the Gear Shift Direction connector for bent pins, corrosion and water; wiggle the harness with the engine running and watch live data
3. Measure supply voltage and ground at the connector with the key on
4. Check the signal wire for shorts to ground or battery and for continuity to the control module
5. Test or substitute the Gear Shift Direction only after wiring and connectors are confirmed good
6. Clear the code and complete a drive cycle to confirm the repair

Related codes

Nearby codes in this group

• P2793Gear Shift Direction Circuit
• P2795Gear Shift Direction Circuit High
• P2792Gate Select Direction Circuit High
• P2791Gate Select Direction Circuit Low
• P2790Gate Select Direction Circuit
• P2789Clutch Adaptive Learning at Limit
• P2788Auto Shift Manual Adaptive Learning at Limit
• P2787Clutch Temperature Too High