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P0771 Acura Code - Shift Solenoid Valve 'E' Stuck Off

Quick Answer

The P0771 diagnostic trouble code for Acura vehicles indicates that the Shift Solenoid Valve 'E' is stuck off. Common causes include Faulty shift solenoid valve 'E', Electrical issues, such as a short circuit or open circuit in the solenoid wiring, Low transmission fluid level or contaminated fluid. 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 Acura indicates Shift Solenoid Valve 'E' Stuck Off.
Common causes
Common causes include Faulty shift solenoid valve 'E', Electrical issues, such as a short circuit or open circuit in the solenoid wiring, Low transmission fluid level or contaminated fluid.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P0771 Acura Description

The P0771 diagnostic trouble code for Acura vehicles indicates that the Shift Solenoid Valve 'E' is stuck off. This solenoid is a crucial component of the vehicle's transmission system, responsible for controlling the flow of transmission fluid to engage the gears properly. When the solenoid is stuck in the off position, it can prevent the transmission from shifting correctly, leading to issues such as harsh shifting, delayed engagement, or even total transmission failure.

OBDII Code P0771 Acura - Shift Solenoid Valve 'E' Stuck Off
P0771 Acura Code - Shift Solenoid Valve 'E' Stuck Off

Common Causes of P0771 Acura

  1. Faulty shift solenoid valve 'E'
  2. Electrical issues, such as a short circuit or open circuit in the solenoid wiring
  3. Low transmission fluid level or contaminated fluid
  4. Mechanical blockage or restriction in the transmission system
  5. Internal transmission damage or wear

Symptoms of P0771 Acura

  1. Harsh or delayed shifting
  2. Gear slippage
  3. Transmission stuck in one gear
  4. Decreased fuel efficiency
  5. Illumination of the Check Engine Light

How to Fix P0771 Acura

  1. Diagnose the issue using a professional OBD-II scanner to confirm the P0771 code and identify the exact cause of the problem.
  2. Inspect the shift solenoid valve 'E' for any signs of damage or malfunction. Replace the solenoid if necessary.
  3. Check the transmission fluid level and condition. Top up or replace the fluid if it is low or contaminated.
  4. Inspect the wiring harness connected to the solenoid for any visible damage or corrosion. Repair or replace any damaged wiring.
  5. Clear the trouble code from the vehicle's computer system and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0771 Acura

The cost of repairing a P0771 code on an Acura vehicle can vary depending on the specific cause of the issue and the labor rates in your area. In general, the replacement of a shift solenoid valve 'E' can cost between $150 to $300, including parts and labor. Additional costs may apply if there are other underlying issues contributing to the code, such as electrical problems or transmission fluid replacement. It's recommended to consult with a professional mechanic or dealership for an accurate estimate based on your vehicle's make and model. Labor rates typically range from $80 to $150 per hour, but can be higher in certain areas or at dealerships.

What does this mean?

Tech Notes for P0771 Acura

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.

When is the Code Detected?

The P0771 code is detected when the ECM has detected a mechanical fault with the solenoid energized, valve stuck off

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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 Acura Code

What does the OBDII code P0771 mean for an Acura?

P0771 indicates that the transmission control module (TCM) has detected that Shift Solenoid Valve 'E' is stuck in the "off" position, causing improper gear shifting.

What are the symptoms of P0771 in an Acura?

Common symptoms include harsh or delayed shifting, inability to shift into certain gears, poor acceleration, reduced fuel efficiency, and the check engine light being illuminated.

What causes the P0771 code to appear on an Acura?

Potential causes include a faulty shift solenoid valve 'E', low or dirty transmission fluid, damaged wiring or connectors in the transmission circuit, or internal transmission issues.

Can driving with a P0771 code damage my Acura?

Yes, driving with a stuck solenoid can cause further damage to the transmission, leading to costly repairs. It's best to address the issue as soon as possible.

How can I fix the P0771 code on my Acura?

Repairs may include replacing the faulty shift solenoid, flushing and refilling the transmission fluid, repairing damaged wiring, or addressing internal transmission problems.

How do I know if the shift solenoid valve 'E' is faulty?

A mechanic can perform diagnostic tests such as continuity checks on the solenoid's circuit or inspect the solenoid's operation using specialized tools.

Can low transmission fluid cause the P0771 code?

Yes, low or contaminated transmission fluid can cause solenoid malfunctions, leading to the P0771 code.

What tools are needed to diagnose P0771 on an Acura?

You’ll need an OBDII scanner, a multimeter for electrical testing, and possibly a transmission fluid pressure gauge for advanced diagnostics.

Is the P0771 code specific to Acura vehicles?

No, P0771 is a generic OBDII code, but its exact symptoms and fixes may vary between vehicle makes and models, including Acura.

How much does it cost to repair the P0771 code on an Acura?

Repair costs vary depending on the issue. Replacing a shift solenoid typically costs $150–$400, while transmission fluid flushes are generally $100–$200. Complex transmission repairs may cost significantly more.

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