P0814
UniversalP0814 indicates a malfunction in the circuit that communicates the current transmission gear position to the vehicle's instrument cluster or display.
Low SeverityThis code signifies an electrical issue within the transmission range display circuit, preventing the correct gear selection (e.g., P, R, N, D) from appearing on your dashboard. While the vehicle may still drive, the driver will not be able to confirm the currently selected gear visually on the display.
⚠️ Before You Begin (Safety First)
Always ensure the vehicle is in Park or Neutral with the parking brake engaged before performing any diagnostics or repairs. Disconnect the battery before working on electrical components to prevent accidental short circuits or injury.
Common Symptoms
- Transmission gear indicator on the dashboard does not light up
- Incorrect gear displayed on the dashboard
- Intermittent gear display
- Check Engine Light (CEL) illuminated
Common Causes
- Faulty wiring or loose connections in the transmission range display circuit
- Corroded connectors
- Defective transmission range sensor (also known as neutral safety switch)
- Malfunctioning instrument cluster
- Issue with the Powertrain Control Module (PCM) or Transmission Control Module (TCM)
Frequently reported on: All Makes
Diagnostic Steps
- Visually inspect all wiring and connectors associated with the transmission range sensor and the instrument cluster for damage or corrosion.
- Check relevant fuses for the transmission and instrument cluster.
- Use a multimeter to test for continuity and proper voltage at the transmission range sensor and its circuit.
- If accessible, clean the electrical contacts of the transmission range sensor and associated connectors.
- Clear the code and retest the system.
👨🔧 When to Call a Professional
If after checking basic connections and fuses the issue persists, or if you are uncomfortable diagnosing electrical circuits, it is highly recommended to consult a professional mechanic as specialized tools may be needed for circuit testing or module programming.
Commonly Asked Questions
Can I drive my car with a P0814 code?
Yes, you can usually drive your car, but without a reliable gear display, it can be confusing and slightly risky. Ensure you know what gear you are in before moving.
Does P0814 affect the transmission's operation?
Typically, no. The code specifically points to the display circuit, meaning the transmission itself usually shifts correctly, but the driver just isn't getting accurate feedback on the dashboard.
Is the transmission range sensor the same as the neutral safety switch?
Often, yes. The transmission range sensor frequently incorporates the function of the neutral safety switch, preventing the engine from starting in gear.
How much does it cost to fix a P0814 code?
Costs can vary widely. A simple wiring repair might be inexpensive (under $100), while replacing a transmission range sensor could range from $150-$400, and an instrument cluster or module replacement could be significantly more, $500+.
Can a blown fuse cause a P0814?
Yes, a blown fuse in the circuit supplying power to the transmission range sensor or the instrument cluster's display could certainly trigger this code. Checking fuses is an important first step.