AutoCodes – Mercury – P0708 Mercury

P0708 Mercury Code - Transmission Range Sensor Circuit High Input

Quick Answer

The park/neutral position (PNP) switch includes a transmission range switch. Common causes include Faulty Park/neutral position switch, Misadjusted park/neutral position switch, Park/neutral position switch harness is open or shorted. 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: P0708 Mercury indicates Transmission Range Sensor Circuit High Input.
Common causes: Common causes include Faulty Park/neutral position switch, Misadjusted park/neutral position switch, Park/neutral position switch harness is open or shorted.
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 1,136

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Apr 04, 2021

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P0708 Mercury Description

The park/neutral position (PNP) switch includes a transmission range switch. The transmission range switch detects the selector lever position when the shift lever is in the N or P shift position and sends a signal to the Transmission Control Module (TCM).

OBDII Code P0708 Mercury - Transmission Range Sensor Circuit High Input - AutoCodes.com — P0708 Mercury Code - Transmission Range Sensor Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0708 Mercury?

Faulty Park/neutral position switch
Misadjusted park/neutral position switch
Park/neutral position switch harness is open or shorted
Park/neutral position switch circuit poor electrical connection

How to Fix the DTC P0708 Mercury?

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 does this mean?

Code Tech Notes

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0708 Mercury 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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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 P0708 Mercury Code

1. What are the common symptoms of OBDII code P0708 (Transmission Range Sensor Circuit High Input) in a Mercury vehicle?

- Common symptoms include issues with shifting gears, the transmission staying in one gear, hesitation when accelerating, and the Check Engine Light illuminating.

2. What can cause the OBDII code P0708 to trigger in a Mercury vehicle?

- This code is typically triggered by a faulty transmission range sensor, damaged wiring or connectors related to the sensor, or issues with the sensor's circuit.

3. How serious is the OBDII code P0708 in a Mercury vehicle?

- Ignoring this code can lead to poor drivability, potential transmission issues, and safety concerns. It is recommended to address the underlying problem promptly.

4. Can I still drive my Mercury with the OBDII code P0708 present?

- It is not advisable to drive the vehicle with this code present, as it can cause further damage to the transmission and affect the overall performance of the vehicle.

5. How can I diagnose the OBDII code P0708 in my Mercury?

- Diagnosing this code involves using a scan tool to check for the specific code, inspecting the transmission range sensor and its connections, and testing the sensor's functionality.

6. Is it possible to repair the OBDII code P0708 in a Mercury by myself?

- While some DIY enthusiasts may attempt to repair this code, it is recommended to seek professional help due to the complexity of transmission range sensor circuits.

7. What are some repair tips for addressing the OBDII code P0708 in a Mercury?

- Repair tips may include checking and cleaning the sensor connections, replacing the transmission range sensor if necessary, and ensuring proper wiring integrity.

8. How much does it cost to fix the OBDII code P0708 in a Mercury?

- The cost of fixing this code can vary depending on the extent of the issue, the parts needed for the repair, and whether you choose to do it yourself or seek professional assistance.

9. Can resetting the OBDII code P0708 in a Mercury make it go away permanently?

- Resetting the code may temporarily clear the Check Engine Light, but if the underlying issue is not addressed, the code is likely to return.

10. How can I prevent the OBDII code P0708 from reoccurring in my Mercury?

- Regular maintenance checks, addressing any transmission issues promptly, and ensuring the transmission range sensor is in good condition can help prevent the code from reoccurring.