AutoCodes – Mazda – P0771 Mazda

P0771 Mazda Code - Shift Solenoid 'E' Stuck Off

Quick Answer

Shift solenoid valve 'E' is turned ON or OFF by the Transmission Control Module (TCM) in response to signals sent from the park/neutral position (PNP) switch, vehicle speed and Engine Control Module (ECM) (throttle opening). Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty shift solenoid 'E' valve. 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: P0771 Mazda indicates Shift Solenoid 'E' Stuck Off.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty shift solenoid 'E' valve.
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 25,427

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 May 08, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0771 Mazda Description

OBDII Code P0771 Mazda - Shift Solenoid 'E' Stuck Off - AutoCodes.com — P0771 Mazda Code - Shift Solenoid 'E' Stuck Off

What does this mean?

What are the Possible Causes of the DTC P0771 Mazda?

Low transmission fluid level
Dirty transmission fluid
Faulty shift solenoid 'E' valve
Shift solenoid 'E' valve harness is open or shorted
Shift solenoid 'E' valve circuit poor electrical connection

How to Fix the DTC P0771 Mazda?

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

When the a transmission solenoid is stuck off, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. If the transmission fluid is very dirty, it is recommend changing the transmission fluid and if possible removing the transmission pan for further diagnosis. Excessive debris or metal particles on the transmission pan could be an indication that there is a transmission mechanical failure and that the transmission will need to be rebuilt or replaced.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0771 Mazda 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 P0771 Mazda Code

1. What is OBDII code P0771 for a Mazda?

- OBDII code P0771 in a Mazda indicates an issue with the Shift Solenoid 'E' being stuck off.

2. What are the common symptoms of P0771 in a Mazda?

- Common symptoms of P0771 in a Mazda include harsh shifting, delayed shifting, transmission slippage, and the transmission staying in one gear.

3. What are the possible causes of the Shift Solenoid 'E' stuck off in a Mazda?

- The Shift Solenoid 'E' stuck off in a Mazda could be caused by a faulty shift solenoid, low transmission fluid level, dirty or contaminated transmission fluid, wiring issues, or a malfunctioning transmission control module.

4. How serious is OBDII code P0771 in a Mazda?

- OBDII code P0771 in a Mazda should be addressed promptly to prevent further damage to the transmission. Ignoring this issue can lead to more severe transmission problems and potential vehicle breakdowns.

5. Can I drive my Mazda with OBDII code P0771?

- It is not recommended to drive your Mazda with OBDII code P0771, as it can cause further damage to the transmission. It's best to have the issue diagnosed and repaired as soon as possible.

6. How can I diagnose OBDII code P0771 in my Mazda?

- Diagnosing OBDII code P0771 in a Mazda typically involves performing a transmission fluid check, inspecting the shift solenoid 'E', checking the wiring and connectors, and using a scan tool to monitor the transmission control module data.

7. What are some repair tips for fixing OBDII code P0771 in a Mazda?

- Repair tips for fixing OBDII code P0771 in a Mazda may include replacing the faulty shift solenoid 'E', flushing and refilling the transmission fluid, repairing any damaged wiring, or resetting the transmission control module.

8. How much does it cost to repair OBDII code P0771 in a Mazda?

- The cost of repairing OBDII code P0771 in a Mazda can vary depending on the underlying issue, the labor rates in your area, and whether you choose to go to a dealership or an independent mechanic. It's best to get a diagnostic assessment to determine the exact cost.

9. Can I clear OBDII code P0771 in my Mazda with a code reader?

- Clearing OBDII code P0771 with a code reader may temporarily remove the warning light, but it will not fix the underlying issue causing the code. It's important to diagnose and address the root cause of the problem to prevent it from recurring.

10. How can I prevent OBDII code P0771 from appearing in my Mazda in the future?

- To prevent OBDII code P0771 from appearing in your Mazda in the future, it's essential to maintain regular transmission fluid changes, address any transmission fluid leaks promptly, and have your vehicle inspected by a professional mechanic at the first sign of transmission issues.