Transmission Range Display Circuit
The P0814 code means the vehicle's onboard diagnostic system has detected: Transmission Range Display Circuit. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $100 - $500 (parts and labor)
Read and clear transmission codes. Many trans codes are caused by low or burnt fluid -- check level and color before assuming the worst.
Basic scanners only read engine codes. This reads transmission, ABS, and airbag too.
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Common Symptoms
- Gear position indicator on dashboard shows incorrect gear
- Check Engine Light illuminated
- PRNDL display is blank or flickering
- Gear indicator may show wrong gear selection
Probable Causes (Ranked by Likelihood)
- Faulty transmission range display module or instrument cluster issue Very High
- Wiring fault between TCM and instrument cluster High
- Communication error on vehicle data bus Moderate
- Faulty transmission range sensor providing incorrect data Low
Frequently Asked Questions
Is P0814 dangerous?
P0814 is a low-severity code. The transmission still shifts normally, but the display may show the wrong gear. This is mostly an inconvenience rather than a safety concern.
Can a failing instrument cluster cause P0814?
Yes, a malfunctioning instrument cluster can fail to display the correct gear position even when the transmission and TCM are functioning properly.
Does P0814 affect how the transmission shifts?
No, P0814 is a display issue only. The transmission will continue to shift based on the actual range sensor and TCM inputs, not the dashboard display.
Mechanics Guide Step-by-step diagnosis
Step-by-Step Diagnostic Procedure
-
Check if the gear indicator matches actual gear selection using a scan tool
-
Inspect wiring between the TCM and instrument cluster
-
Check for communication DTCs on the CAN bus network
-
Test the transmission range sensor signal accuracy
Sources 2
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines the generic OBD-II code ranges)
- Cross-checked against the SAE J2012:2002 DTC table (2026-08-27)archived scan of the SAE standard — readable copy, not SAE’s current edition
Commonly Affected Vehicles
- 2007-2017 Ford Explorer
- 2008-2018 Chevrolet Silverado
- 2010-2020 Toyota Highlander
- 2009-2019 Honda Odyssey
Related Codes
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