What are the common causes of P283D?

A short to ground on the shift fork C position signal wire. An open in the shift fork C position sensor ground. A failed shift fork C position sensor. A shift fork C stuck away from its detent.

Read shift fork C position voltage on a scan tool. Test the shift fork C position signal wire for a short to ground. Test the shift fork C position sensor ground for an open. Check the shift fork C position sensor connector pins. Replace the shift fork C position sensor if the circuit tests good. Clear the code and retest.

P283D

Shift Fork C Position Circuit Low

System: Transmission (P code)
Lamp: Check Engine Light
Category: Powertrain - Transmission

What it means

P283D means Shift Fork C Position Circuit Low.

Check these first

A short to ground on the shift fork C position signal wire
An open in the shift fork C position sensor ground
A failed shift fork C position sensor
A shift fork C stuck away from its detent

What to do next

Read shift fork C position voltage on a scan tool
Test the shift fork C position signal wire for a short to ground
Test the shift fork C position sensor ground for an open
Check the shift fork C position sensor connector pins
Replace the shift fork C position sensor if the circuit tests good
Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.