AutoCodes – Generic – P1918

P1918 Code - Transmission Range Display Circuit Malfunction

Quick Answer

P1918 indicates Transmission Range Display Circuit Malfunction. Common causes include Faulty Transmission Range Display, Transmission Range Display harness is open or shorted, Transmission Range Display circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1918 indicates Transmission Range Display Circuit Malfunction.
Common causes: Common causes include Faulty Transmission Range Display, Transmission Range Display harness is open or shorted, Transmission Range Display circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 17,718

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 28, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1918 Description

OBDII Code P1918 - Transmission Range Display Circuit Malfunction - AutoCodes.com — P1918 Code - Transmission Range Display Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P1918?

Faulty Transmission Range Display
Transmission Range Display harness is open or shorted
Transmission Range Display circuit poor electrical connection

How to Fix the DTC P1918?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1918 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Need Help with the Code?

Get the P1918 code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1918 Code

1. What are the common symptoms of OBDII code P1918 (Transmission Range Display Circuit Malfunction)?

- Common symptoms include incorrect gear display on the dashboard, erratic shifting behavior, and illuminated warning lights such as the Check Engine Light.

2. What can cause the OBDII code P1918 to trigger?

- The code P1918 can be triggered by issues such as damaged wiring or connectors in the transmission range display circuit, faulty transmission range sensor, or a defective instrument cluster.

3. How can I diagnose the cause of OBDII code P1918?

- To diagnose the cause of code P1918, you can perform a visual inspection of wiring and connectors, test the transmission range sensor for proper operation, and use a scan tool to check for fault codes in related systems.

4. What are some repair tips for fixing OBDII code P1918?

- Repair tips may include repairing or replacing damaged wiring or connectors, replacing the transmission range sensor if faulty, and ensuring proper connections in the instrument cluster.

5. Can I continue driving with OBDII code P1918 present?

- It is generally not recommended to continue driving with OBDII code P1918 present, as it can lead to transmission issues and potential safety hazards. It's best to address the underlying problem promptly.

6. How serious is OBDII code P1918?

- OBDII code P1918 should be taken seriously, as it indicates a malfunction in the transmission range display circuit. Ignoring this code can lead to incorrect gear selection, transmission problems, and potential vehicle stalling.

7. Will resetting the trouble codes make OBDII code P1918 disappear?

- Resetting the trouble codes may temporarily clear OBDII code P1918, but if the underlying issue is not fixed, the code is likely to reappear once the problem is detected again by the vehicle's systems.

8. Is it possible to fix OBDII code P1918 without professional help?

- Depending on your automotive knowledge and skills, it may be possible to fix OBDII code P1918 on your own by following diagnostic procedures, checking and repairing wiring, or replacing components like the transmission range sensor.

9. How much does it cost to repair OBDII code P1918 at a mechanic or dealership?

- The cost of repairing OBDII code P1918 can vary depending on the specific cause of the issue, the labor rates of the mechanic or dealership, and the cost of any parts that need replacement. It's advisable to get a diagnosis and estimate before proceeding with repairs.

10. Can extreme weather conditions affect OBDII code P1918?

- Extreme weather conditions, such as extreme heat or cold, can potentially affect the electrical components involved in the transmission range display circuit, leading to issues that may trigger OBDII code P1918.