What Does P0814 Mean?
The Transmission Range Display Circuit has a fault. This circuit communicates the current gear selection (P, R, N, D, etc.) to the instrument cluster for display to the driver. The PCM has detected a problem with the signal going to the gear indicator display — either the signal is missing, incorrect, or the display circuit is not responding properly.
Common Causes
30%
Faulty instrument cluster gear indicator circuit or display element
25%
Open or damaged wiring between PCM/TCM and instrument cluster
20%
Transmission range sensor providing inaccurate position data
15%
PCM or TCM communication fault to the instrument cluster
10%
Corroded connectors at the instrument cluster or body harness junction
Diagnostic Steps
1
Observe the gear position indicator on the dash while shifting through all positions — note if it shows incorrect gear, blanks out, or fails to update.
2
Compare the scan tool's reported gear position to the actual shifter position — if the scan tool is correct but the display is wrong, the fault is in the display circuit.
3
Check for communication codes (U-codes) between the TCM and instrument cluster module that could indicate a CAN bus issue.
4
Inspect the instrument cluster connector for bent pins, corrosion, or loose fit — reseat the connector firmly.
5
If the transmission range sensor signal matches actual position on the scan tool, focus diagnosis on the wiring and display side rather than the sensor.
Estimated Repair Cost
$50 - $600
Parts + labor, varies by vehicle and location
The Transmission Range Display Circuit has a fault. This circuit communicates the current gear selection (P, R, N, D, etc.) to the instrument cluster for display to the driver. The PCM has detected a problem with the signal going to the gear indicator display — either the signal is missing, incorrec...
The most common cause of P0814 (Transmission Range Display Circuit) is: Faulty instrument cluster gear indicator circuit or display element
Typical repair costs for P0814 range from $50 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
The vehicle can be driven, but without an accurate gear position display, the driver may not know what gear is selected. This is especially dangerous if the indicator shows an incorrect gear. Use extra caution when shifting until repaired.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0814 to identify the root cause.
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Quick Info
Category
Powertrain
System
Transmission Control / Instrument Cluster
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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