What Does P2790 Mean?
The PCM has detected a malfunction in the gate select direction circuit, which controls gear selection direction in the transmission shifter assembly. This affects the transmission's ability to properly identify shift gate position.
Common Causes
35%
Faulty gate select position sensor or switch
25%
Damaged wiring harness or connectors in gate select circuit
20%
Mechanical linkage issue in shifter assembly
15%
Corroded or loose electrical connections at shifter
5%
TCM or PCM internal fault
Diagnostic Steps
1
Step 1: Inspect shifter assembly and gate select sensor for physical damage or misalignment
2
Step 2: Check gate select sensor connector for corrosion, proper seating, and terminal integrity
3
Step 3: Test gate select sensor operation by monitoring scan tool data while moving shifter through all positions
4
Step 4: Verify wiring harness continuity between gate select sensor and TCM/PCM; check for shorts
5
Step 5: Inspect mechanical linkage and shift cable for binding, damage, or misadjustment
Estimated Repair Cost
$150 - $600
Parts + labor, varies by vehicle and location
The PCM has detected a malfunction in the gate select direction circuit, which controls gear selection direction in the transmission shifter assembly. This affects the transmission's ability to properly identify shift gate position.
The most common cause of P2790 (Gate Select Direction Circuit) is: Faulty gate select position sensor or switch
Typical repair costs for P2790 range from $150 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle may not shift properly or may be stuck in one gear. May not start due to park/neutral safety switch integration. Do not drive if unable to verify gear selection.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2790 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Powertrain
System
Transmission Shift Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
