AutoCodes – Generic – P17E8

P17E8 Code - Ratio Monitoring Shift 3-4

Quick Answer

The Transmission Control Module (TCM) monitors the Shift Ratio. Common causes include Transmission Mechanical Problems, Faulty Transmission Assembly. 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: P17E8 indicates Ratio Monitoring Shift 3-4.
Common causes: Common causes include Transmission Mechanical Problems, Faulty Transmission Assembly.
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 16,493

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 Jan 18, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P17E8 Description

The Transmission Control Module (TCM) monitors the Shift Ratio. The TCM sets the OBDII code when the Shift Ratio is not to factory specifications.

OBDII Code P17E8 - Ratio Monitoring Shift 3-4 - AutoCodes.com — P17E8 Code - Ratio Monitoring Shift 3-4

What does this mean?

What are the Possible Causes of the DTC P17E8?

Transmission Mechanical Problems
Faulty Transmission Assembly

How to Fix the DTC P17E8?

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 P17E8 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.

Need more information about the P17E8 code?

Need more information on how to fix the P17E8 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P17E8 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P17E8 BMW — Ratio Monitoring Shift 3-4
P17E8 MINI — Ratio Monitoring Shift 3-4

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 P17E8 Code

1. What are the common symptoms of OBDII code P17E8 (Ratio Monitoring Shift 3-4)?

The common symptoms of P17E8 may include harsh shifting between gears 3 and 4, transmission slipping, decreased fuel efficiency, and the transmission going into limp mode.

2. What are the possible causes of OBDII code P17E8?

The possible causes of P17E8 include low transmission fluid level, faulty transmission components, electrical issues in the transmission system, or a malfunctioning transmission control module.

3. How serious is OBDII code P17E8 (Ratio Monitoring Shift 3-4)?

P17E8 can be a serious issue if left untreated, as it can lead to further damage to the transmission and potentially result in costly repairs. It is recommended to address the problem promptly.

4. Can I continue driving with OBDII code P17E8 present?

It is not advisable to continue driving with P17E8 present, as it can cause further damage to the transmission. It is recommended to have the issue diagnosed and repaired as soon as possible.

5. How can I diagnose OBDII code P17E8?

Diagnosing P17E8 typically involves using an OBDII scanner to retrieve the code, checking the transmission fluid level and condition, inspecting for any visible damage to the transmission components, and performing further troubleshooting as needed.

6. What are some repair tips for fixing OBDII code P17E8?

Repairing P17E8 may involve topping up the transmission fluid, replacing faulty transmission components, addressing any electrical issues, or reprogramming the transmission control module. It is recommended to consult with a professional mechanic for an accurate diagnosis and repair plan.

7. Can OBDII code P17E8 be cleared/reset without fixing the underlying issue?

Clearing or resetting P17E8 without addressing the underlying issue is not recommended, as the problem will likely reoccur. It is important to fix the root cause of the code to ensure proper functioning of the transmission.

8. How much does it typically cost to repair OBDII code P17E8?

The cost of repairing P17E8 can vary depending on the specific cause of the issue, the extent of the damage, and the labor rates in your area. It is recommended to obtain quotes from different mechanics for an accurate estimate.

9. Is OBDII code P17E8 specific to a certain vehicle make or model?

P17E8 is a generic OBDII code related to ratio monitoring shift 3-4 and can appear in various vehicle makes and models with automatic transmissions. The specific repair steps may vary depending on the manufacturer.

10. How can I prevent OBDII code P17E8 from occurring again in the future?

To prevent the reoccurrence of P17E8, it is important to maintain regular transmission fluid checks and changes, drive gently to avoid harsh shifting, address any transmission issues promptly, and follow the recommended maintenance schedule for your vehicle.