AutoCodes – Mercury – P1700 Mercury

P1700 Mercury Code - Transmission System Problems

Quick Answer

The Powertrain Control Module (PCM) monitors the Transmission Control Module (TCM). Common causes include Check for codes in Transmission Control Module (TCM), Faulty internal component, Faulty Direct One-Way Clutch. 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: P1700 Mercury indicates Transmission System Problems.
Common causes: Common causes include Check for codes in Transmission Control Module (TCM), Faulty internal component, Faulty Direct One-Way Clutch.
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 3,123

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 Jul 07, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1700 Mercury Description

The Powertrain Control Module (PCM) monitors the Transmission Control Module (TCM). The Diagnostic Trouble Code (DTC) will set when the TCM determines that is an internal transmission problem. If other DTCs are present, diagnose, and repair them first. Cleat the DTC and drive the vehicle. If the P1700 returns, disassemble the transmission and inspect the Direct One-Way Clutch.

OBDII Code P1700 Mercury - Transmission System Problems - AutoCodes.com — P1700 Mercury Code - Transmission System Problems

What does this mean?

What are the Possible Causes of the DTC P1700 Mercury?

Check for codes in Transmission Control Module (TCM)
Faulty internal component
Faulty Direct One-Way Clutch

How to Fix the DTC P1700 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1700 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 P1700 Mercury Code

1. What does the OBDII code P1700 mean for a Mercury vehicle?

P1700 indicates a problem with the transmission control system, often related to communication issues between the transmission control module (TCM) and engine control module (ECM).

2. What are common symptoms of code P1700 in a Mercury?

Symptoms include erratic shifting, transmission slipping, poor acceleration, and the Check Engine Light being illuminated.

3. What causes the P1700 code to appear in a Mercury?

Common causes include faulty transmission control module, damaged wiring or connectors, low transmission fluid, or internal transmission issues.

4. Can low transmission fluid trigger the P1700 code?

Yes, insufficient transmission fluid can cause transmission system problems and contribute to the P1700 code.

5. Is it safe to drive a Mercury with the P1700 code?

Driving with this code can lead to further transmission damage, so it’s best to address the problem promptly.

6. How can I diagnose the P1700 code on a Mercury?

Use an OBDII scanner to retrieve codes, inspect wiring and connectors for damage, and check the transmission fluid level and condition.

7. How is the P1700 code typically repaired in a Mercury?

Repairs may include replacing damaged wiring, updating or replacing the TCM, or addressing internal transmission issues.

8. Can resetting the Check Engine Light fix the P1700 code?

Resetting the light may clear the code temporarily, but the underlying issue needs to be fixed to prevent the code from returning.

9. Does the P1700 code require professional repairs?

While some issues like low transmission fluid can be resolved by the owner, diagnosing and repairing complex transmission or TCM problems usually requires a professional.

10. How much does it cost to fix the P1700 code in a Mercury?

Costs can vary widely depending on the cause, ranging from a minor repair like fluid refill ($50-$100) to replacing the TCM or addressing internal transmission issues ($500-$2,000).