P0770 OBD-II Trouble Code: Shift Solenoid E Malfunction

Our certified mechanics come to you · Get a fair and transparent estimate upfront

Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0770 code

P0770 is a diagnostic trouble code (DTC) for "Shift Solenoid E Malfunction". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $99.99 . Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.0 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford $99.99 $20.0
Toyota $99.99 $20.0
BMW $109.99 $20.0
SCHEDULE P0770 DIAGNOSTIC Get a fair and transparent estimate upfront

P0770 definition

A P0770 trouble code is related to a vehicle’s automatic transmission and the shift solenoid that controls the lock-up mechanism of the torque converter.

What the P0770 code means

P0770 is an OBD-II generic code for a malfunction of shift solenoid E on the transmission valve body. This controls the supply of hydraulic pressure to the lock-up clutch of the torque converter that creates a one-to-one ratio for both input and output transmission speeds. Lock up typically happens at cruising speeds when the torque converter doesn’t need to slip and to increase highway fuel economy.

What causes the P0770 code?

The most common causes for a P0770 are:

What are the symptoms of the P0770 code?

The most common symptoms of a P0770 include the transmission’s refusal to engage lock up, decreased fuel economy, and higher engine speeds while cruising. In some cases, the transmission will shift harshly or stall the engine when idle. In others, nothing more than a check engine light will illuminate on the dash.

How does a mechanic diagnose the P0770 code?

Because a P0770 is related to a vehicle’s speed, your mechanic will first test drive the vehicle with the check engine light to see how severe the symptoms are. If the vehicle seems to be operating as it should, the code could be an intermittent issue. If it fails to enter lock up however, your mechanic will monitor the engine speed, road speed and throttle position to confirm the transmission isn’t locking up the torque converter.

By using a professional OBD-II scanner, your mechanic can monitor solenoid E’s signal to determine if it is working as it should. If not, the solenoid will be replaced. However, if the solenoid is sending the correct signal range depending on throttle position, there is likely a mechanical problem with the torque converter, meaning it will have to be replaced.

As with most transmission trouble codes, the fluid will be checked for being low or dirty.

Common mistakes when diagnosing the P0770 code

Low, or dirty transmission fluid can cause a number of unwanted issues and can even result in diagnostic trouble codes. It’s critical to check the fluid before purchasing replacement parts.

How serious is the P0770 code?

Because most P0770s will impact how the torque converter locks and unlocks, it’s likely that your transmission could be at risk of overheating with this code. It’s important to get this inspected as soon as possible and if you do have to drive with a P0770, try to avoid highway speeds.

What repairs can fix the P0770 code?

The most common repairs for a P0770 are as follows:

Additional comments for consideration regarding the P0770 code

Toyota issued a factory service bulletin for the P0770, impacting the 2003 Corolla and Matrix.

Need help with a P0770 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

OBD-II
trouble codes
P0770

No more waiting rooms! Our mechanics will come to you to diagnose and fix the P0770 code.

SCHEDULE P0770 DIAGNOSTIC
Get a $20 credit for the follow-up repair

Recent Check Engine Light is on Inspection reviews

Excellent Rating

(6529)

Rating Summary
6050
228
53
36
162
6050
228
53
36
162
 at YourMechanic

Kevin

24 years of experience
449 reviews
Kevin
24 years of experience
Toyota Camry L4-2.2L - Check Engine Light is on - Stone Mountain, Georgia
He is a very knowledgeable Mechanic, and told me where exactly to get my exhaust leak fix. Very honest and thorough Mechanic.
 at YourMechanic

Raymond

27 years of experience
144 reviews
Raymond
27 years of experience
Chevrolet Suburban 1500 - Check Engine Light is on - Apple Valley, California
Raymond is an excellent mechanic, I feel he is very honest and trustworthy. I would recommend him to everyone.
 at YourMechanic

Diana

18 years of experience
46 reviews
Diana
18 years of experience
Ford Escape V6-3.0L - Check Engine Light is on - Union, New Jersey
Fantastic service. Super knowledgeable and courteous. Something you don't get in the brick and mortar shops. A+++++++++
 at YourMechanic

Rusty

23 years of experience
462 reviews
Rusty
23 years of experience
Audi A4 L4-2.0L - Check Engine Light is on - Fort Worth, Texas
Rusty was knowledgeable, friendly, and helpful. He took the time to talk with me about my car and the various repair options I should consider. Highly recommended, and would use him again with high confidence.


More related articles

P0132 OBD-II Trouble Code: O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)
P0132 trouble code definition 02 Sensor Circuit High Voltage (Bank 1 Sensor 1) What the P0132 code means When the P0132 trouble...
P2335 OBD-II Trouble Code: Ignition Coil L Secondary Circuit
P2335 means there is a malfunction in the secondary circuit of ignition coil L, usually due to a problem with an electrical component.
P0629 OBD-II Trouble Code: Fuel Pump "A" Control Circuit High
P0629 means there is an issue with the "A" control circuit in the fuel pump often due too bad connectors/wires or a defective CAN bus.

Related questions

Cranks but won't start

Hello, thanks for writing in about your Dodge Ram 1500. I'm curious if your Check Engine light on. Checking the basics will help here: will it crank but not start? If so, is there spark at the plugs and does...

Check Engine Light, dealership quoted me for a coolant control valve replacement.

Hi there, thanks for writing in. The coolant control valve controls the flow of coolant to the engine, the storage tank, and the heater core. A fault with this valve could prevent proper engine starting and reduce your fuel economy...

My car has poor acceleration.

From what you've described, it sounds like you may have a mass airflow sensor that is giving incorrect data for the altitude you are at. This can cause low power, pinging, and O2 codes indicating a too lean condition. A...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com