P0764 Code - Shift Solenoid 'C' Intermittent
Quick Answer
Shift solenoid valve 'C' 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 'C' 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
- P0764 indicates Shift Solenoid 'C' Intermittent.
- Common causes
- Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty shift solenoid 'C' 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 P0764 Description
What are the Possible Causes of the DTC P0764?
- Low transmission fluid level
- Dirty transmission fluid
- Faulty shift solenoid 'C' valve
- Shift solenoid 'C' valve harness or connectors
- Shift solenoid 'C' valve circuit is open or shorted
How to Fix the DTC P0764?
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 P0764 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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Information for Specific Makes
- P0764 Mercedes-Benz — Shift Solenoid 'C' Intermittent
Frequently Asked Questions about P0764 Code
What does the OBDII code P0764 mean?
P0764 indicates that the transmission control module (TCM) has detected intermittent operation of shift solenoid 'C,' which controls gear shifting in the automatic transmission.
What are the common symptoms of code P0764?
Symptoms can include harsh or delayed shifting, transmission slipping, erratic gear changes, reduced fuel efficiency, or the transmission stuck in one gear.
What causes the P0764 code to appear?
Common causes include a malfunctioning shift solenoid 'C,' dirty or low transmission fluid, wiring issues such as shorts or open circuits, or internal transmission problems.
Can driving with code P0764 damage my vehicle?
Yes, driving with this code can lead to further transmission damage and reduced performance. It’s best to address the issue promptly to avoid costly repairs.
How do I diagnose code P0764?
Diagnosis involves checking the transmission fluid level and condition, inspecting wiring and connectors for damage, testing the shift solenoid 'C,' and scanning for additional related codes.
Can low transmission fluid cause P0764?
Yes, low or dirty transmission fluid can prevent the shift solenoid from operating correctly, leading to intermittent shifting issues and triggering the code.
How is code P0764 fixed?
Repairs may involve replacing shift solenoid 'C,' cleaning or replacing transmission fluid, repairing damaged wiring, or addressing internal transmission problems.
What tools are needed to diagnose and fix P0764?
You’ll need an OBDII scanner, a multimeter for testing electrical circuits, and possibly tools to access and replace the solenoid or perform a transmission fluid change.
Is code P0764 specific to certain car brands?
No, P0764 can appear on any vehicle equipped with OBDII systems and automatic transmissions, but repair procedures may vary by manufacturer.
How much does it cost to fix code P0764?
Repair costs vary widely depending on the cause. Solenoid replacement may cost $200-$500, while transmission repairs can exceed $1,000. Diagnosis fees may also apply.
Discuss the causes and fixes for P0764 OBDII Code
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