P0773 Lexus Code - Shift Solenoid 'E' Electrical Malfunction
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
- P0773 Lexus indicates Shift Solenoid 'E' Electrical Malfunction.
- 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.
Code P0773 Lexus Description
What are the Possible Causes of the DTC P0773 Lexus?
- 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 P0773 Lexus?
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 P0773 Lexus 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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Frequently Asked Questions about P0773 Lexus Code
1. What does the OBDII code P0773 mean on a Lexus?
P0773 indicates a Shift Solenoid 'E' Electrical Malfunction, meaning the transmission control system has detected an issue with the electrical circuit of the solenoid responsible for controlling gear shifts.
2. What are the common symptoms of code P0773 in a Lexus?
Symptoms may include harsh or delayed shifting, failure to shift into certain gears, decreased fuel efficiency, and illumination of the Check Engine Light.
3. What causes the P0773 code in a Lexus?
Common causes include a faulty shift solenoid 'E', damaged wiring or connectors in the solenoid circuit, transmission fluid contamination, or a malfunctioning transmission control module (TCM).
4. Can you drive a Lexus with a P0773 code?
While it may still be drivable, driving with this code can cause further damage to the transmission. It's best to address the issue as soon as possible.
5. How do you diagnose the P0773 code in a Lexus?
Diagnosis involves using an OBDII scanner to confirm the code, inspecting the solenoid wiring and connectors for damage or corrosion, testing the solenoid with a multimeter, and checking the transmission fluid condition.
6. How do you fix the P0773 code on a Lexus?
Repairs may include replacing the shift solenoid 'E', repairing or replacing damaged wiring, cleaning or replacing connectors, or servicing the transmission fluid.
7. How much does it cost to fix the P0773 code on a Lexus?
Repair costs vary but typically range from $150 to $400 for solenoid replacement. Additional costs may apply for wiring repairs or fluid changes.
8. Can low transmission fluid cause the P0773 code?
Yes, low or contaminated transmission fluid can affect solenoid operation, potentially triggering the P0773 code.
9. What tools are needed to troubleshoot the P0773 code in a Lexus?
You’ll need an OBDII scanner, a multimeter for electrical testing, and possibly tools to access the transmission components.
10. Will resetting the Check Engine Light fix the P0773 code on a Lexus?
No, resetting the light will not fix the underlying issue. The problem must be properly diagnosed and repaired to prevent the code from returning.
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