Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that a part in your car's transmission, called a shift solenoid, isn't working right. It's like a little switch that helps change gears, and it's not doing its job properly.
The P0770 code indicates that the transmission control module (TCM) has detected a problem with the shift solenoid E, which is responsible for controlling gear shifts in the automatic transmission.
Shift solenoids are electro-hydraulic valves that control the flow of transmission fluid to change gears. The P0770 code is triggered when the TCM detects a fault in the electrical circuit or mechanical operation of shift solenoid E. This can result in improper or delayed gear shifting.
• Check Engine Light is on
• Transmission slipping
• Harsh or delayed shifting
• Decreased fuel efficiency
• Vehicle stuck in a single gear
• Faulty shift solenoid E
• Wiring issues in the solenoid circuit
• Dirty or low transmission fluid
• Transmission control module (TCM) failure
• Mechanical issues within the transmission
Shift Solenoid: An electromechanical valve that controls the flow of transmission fluid to change gears.
Transmission Control Module (TCM): A computer that controls the operation of the transmission.
• Scan the vehicle for codes and note any related codes.
• Inspect the transmission fluid level and condition.
• Check the wiring and connectors for the shift solenoid E.
• Test the shift solenoid E for proper operation.
• Inspect the TCM for faults.
• Replace the shift solenoid E if faulty.
• Repair or replace damaged wiring or connectors.
• Flush and refill the transmission fluid.
• Replace or reprogram the TCM if necessary.
• Inspect and repair any mechanical issues in the transmission.
• OBD-II scanner
• Multimeter
• Transmission fluid pump
• Wrench set
• Screwdriver set
$150 - $500
Moderate
• Toyota Camry
• Honda Accord
• Nissan Altima
• Regularly check and maintain transmission fluid levels.
• Perform scheduled transmission services.
• Inspect wiring and connectors periodically.
Transmission Issue
• Avoid driving long distances until the issue is fixed.
• Get the vehicle inspected by a professional mechanic.
• Monitor for any changes in vehicle performance.
Check if the vehicle's powertrain warranty covers transmission repairs.
The P0770 code has been commonly reported in vehicles with over 100,000 miles and is often related to transmission wear and tear.
Moderate – It is advisable to address this issue soon to prevent further transmission damage.
Driving with a malfunctioning transmission can be unsafe and may lead to further vehicle damage.
• Vehicle at operating temperature
• Transmission fluid at the correct level
Shift solenoid E is located inside the transmission valve body, which is typically accessed by removing the transmission pan.
Q: Can I drive with a P0770 code?
A: It's not recommended to drive with this code for long periods as it can cause further damage to the transmission.
Q: How serious is the P0770 code?
A: The P0770 code is moderately serious and should be addressed to prevent transmission damage and ensure safe vehicle operation.
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