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P0814

Overview

Code

P0814

Code Type

P

Code Class

P0

System

Transmission

Severity Level

High

Emissions Related

true

Drivability Impact

Major

Diagnostic Protocol

OBD2

Freeze Frame Useful

true

Code Definition

Diagnostic trouble code P0814 indicates a malfunction in the transmission control module (TCM) range sensor

Symptoms

Rough shifting Slipping transmission

Overview applies to this diagnostic code.

Affected Systems

On This Page

  • Code Definition

  • Symptoms

  • Affected Systems

  • Possible Causes

  • Diagnostic Steps

  • Drive Safety Notes​

More Resources

Transmission control module (TCM) range sensor

Possible Causes

Faulty range sensor Wiring or circuit issues

Diagnostic Steps

1 Inspect range sensor2 Test TCM functionality

Drive Safety Notes

Range sensor issues can cause poor shifting, transmission failure, and engine stalling

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