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Code P0814

Quick reference

P0814 at a glance

Plain-language meaning
This code means that the car's computer is having trouble showing which gear the car is in. It's like when you can't find the right channel on your TV because the remote isn't working properly.
Urgency
Moderate – While the vehicle may still be drivable, improper gear indication can lead to unsafe driving conditions.
Difficulty
Moderate
System
Sensor Issue
Tools mentioned
OBD-II scanner, Multimeter, Screwdriver set

This summary uses the existing diagnostic information shown in full below.

Laymans terms

This code means that the car's computer is having trouble showing which gear the car is in. It's like when you can't find the right channel on your TV because the remote isn't working properly.

Explanation

The P0814 code is triggered when there is a malfunction in the circuit that displays the transmission range (gear position) on the dashboard.

Technical description

The Transmission Range Display Circuit is responsible for indicating the current gear position to the driver. When the Powertrain Control Module (PCM) detects a fault in this circuit, it sets the P0814 code. This could be due to wiring issues, a faulty display, or problems with the transmission range sensor.

Symptoms

• Gear position not displayed on dashboard

• Check Engine Light illuminated

• Transmission may not shift properly

Common Causes

• Faulty transmission range sensor

• Damaged or corroded wiring/connectors

• Malfunctioning dashboard display

Glossary

PCM: Powertrain Control Module

OBD-II: On-Board Diagnostics, Second Generation

Diagnosis steps

• Check for any other related codes.

• Inspect wiring and connectors for damage or corrosion.

• Test the transmission range sensor for proper operation.

Repair procedures

• Replace or repair damaged wiring/connectors.

• Replace the transmission range sensor if faulty.

• Repair or replace the dashboard display if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Screwdriver set

Estimated repair cost

$150 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Ford F-150

• Chevrolet Silverado

• Toyota Camry

Preventive measures

• Regularly inspect wiring for damage.

• Keep connectors clean and free from corrosion.

• Ensure the transmission is serviced as per the manufacturer's schedule.

Error code type

Sensor Issue

User experience recommendations

• Do not ignore the Check Engine Light; have the issue diagnosed promptly.

• Avoid driving the vehicle if the transmission is not shifting properly.

Warranty information

Check with your vehicle manufacturer for warranty coverage on transmission components.

Historical data

The P0814 code has been reported in various models, particularly in vehicles with electronic transmission range displays.

Urgency level

Moderate – While the vehicle may still be drivable, improper gear indication can lead to unsafe driving conditions.

Testing conditions

• Vehicle must be in a safe location.

• Ensure the vehicle is turned off before inspecting wiring.

Component location

The transmission range sensor is typically located on the transmission housing, while the display circuit is part of the dashboard assembly.

FAQs

Q: Can I drive with a P0814 code?
A: It's not recommended as it may lead to unsafe driving conditions due to improper gear indication.

Q: Will fixing the P0814 code improve my vehicle's performance?
A: Yes, resolving this issue will ensure proper gear indication and may improve transmission performance.

Optional diagnostic gear

Tools that may help diagnose P0814

THINKCAR ThinkScan Bidirectional diagnostic tool illustration

High-End · Full-system diagnostics

THINKCAR ThinkScan Bidirectional

A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.

Network faults often require full-system access instead of a generic code reader alone.

View on Amazon
Klein Tools MM325 diagnostic tool illustration

Universal · Digital multimeter

Klein Tools MM325

A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.

Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.

View on Amazon
WORKPRO Wiring Repair Kit diagnostic tool illustration

Universal · Wire connectors and repair kit

WORKPRO Wiring Repair Kit

Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.

Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.

View on Amazon

These are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.

Source: ezOBD2 diagnostic database
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