P2850 OBD-II: Shift Fork "D" Unrequested Movement

P2850 Severity

Moderate

Will P2850 go away on its own?

Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.

For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.

Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.

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What causes OBD-II fault code P2850?

The Transmission is responsible for converting the power produced by the engine to movement of the vehicle. Some transmissions utilized electric motors to change gears. If the Transmission Control Module determines that the transmission is not shifting properly, code P2850 will be set.

OBD II Fault Code

OBD II P2850

OBD-II Code Transmission may not shift properly is defined as a Shift Fork "D" Unrequested Movement

Transmission may not shift properly Symptoms

Increased fuel consumption
Transmission may not shift properly

Common Problems That Trigger the P2850 Code

Internal transmission failure
Transmission Control Module (TCM) failure
Transmission Control Module (TCM) needs to be calibrated
Transmission Control Module (TCM) software needs to be updated
Wiring issue

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Other OBD-II Codes

P284F: Shift Fork "C" Unrequested Movement P284E: Shift Fork "B" Unrequested Movement P284D: Shift Fork "A" Unrequested Movement P284C: Shift Fork "D" Stuck P284B: Shift Fork "C" Stuck

OBD II Fault Code

OBD II P2850

OBD-II Code Transmission may not shift properly is defined as a Shift Fork "D" Unrequested Movement

Transmission may not shift properly Symptoms

Increased fuel consumption
Transmission may not shift properly

Common Problems That Trigger the P2850 Code

Internal transmission failure
Transmission Control Module (TCM) failure
Transmission Control Module (TCM) needs to be calibrated
Transmission Control Module (TCM) software needs to be updated
Wiring issue

P2850 OBD-II: Shift Fork "D" Unrequested Movement

Will P2850 go away on its own?

What causes OBD-II fault code P2850?

Need a P2850 diagnosis? Trust our experts.

OBD II Fault Code

Transmission may not shift properly Symptoms

Common Problems That Trigger the P2850 Code

Ask our experts about P2850.

Other OBD-II Codes

OBD Code Resources

OBD II Fault Code

Transmission may not shift properly Symptoms

Common Problems That Trigger the P2850 Code