OBD-II Code P0760 — What It Means & How to Fix It

What Does This Error Mean?

P0760 means Shift Solenoid C has a malfunction. Like the other shift solenoids (A and B), Solenoid C is an electrically controlled valve in the transmission that directs hydraulic fluid to engage specific gears. When Solenoid C fails, higher gear combinations are typically affected. You may notice the transmission will not upshift fully, or it may slip in certain gears. This code requires diagnosis and repair to restore normal automatic shifting.

Affected Models

All vehicles 1996+ with automatic transmission (typically 5-speed or higher)
Common in Honda and Acura V6 models
Common in Toyota and Lexus vehicles
Common in Nissan vehicles
Common in GM 6-speed transmissions

Common Causes

Faulty shift solenoid C with an open or shorted electrical coil
Clogged solenoid passages due to contaminated or degraded transmission fluid
Damaged wiring harness inside the transmission to solenoid C
Low transmission fluid causing insufficient hydraulic pressure
Faulty TCM output driver for solenoid C circuit

How to Fix It

Check transmission fluid level and condition. Replace fluid and filter if it is dark, burnt-smelling, or has metal particles.

Always use the exact transmission fluid type specified on the dipstick or in the owner's manual.
Drop the transmission pan and locate solenoid C on the valve body. Your repair manual will identify its exact position since labeling varies by manufacturer.

On 5-speed and 6-speed transmissions, the solenoid layout is more complex than 4-speeds. Take photos before disassembly.
Test solenoid C resistance with a multimeter. Replace if it reads open or shorted. A normally functioning solenoid reads 10 to 30 ohms.

Also test for a click by briefly applying 12V. No click despite correct resistance means the plunger is mechanically stuck.
Inspect the internal wiring harness connector at the solenoid. Internal harness failures are common on high-mileage transmissions. Replace the internal harness if wires are broken or terminals are corroded.

Internal harnesses are available as service parts for most common transmissions — they are worth replacing if the transmission is being opened anyway.
Install the new solenoid, fresh fluid, and new filter. Clear the code and test drive through the full gear range including highway speeds.

Monitor for any slip or shudder in the affected gear range. If problems persist, a valve body or clutch pack issue is likely.

When to Call a Professional

Solenoid replacement with fluid service typically costs $300 to $600 at a shop. Individual solenoids cost $30 to $100. Solenoid packs (multiple solenoids) cost $100 to $250. If internal transmission damage is found, rebuilds cost $2,500 to $4,500 or more. Diagnosis at a shop costs $100 to $200 in labor.

Frequently Asked Questions

Which gears does Solenoid C control?

It depends on the specific transmission. On many 4-speed automatics, Solenoid C (or Shift Solenoid 3) helps control 3rd and 4th gear engagement. On 5-speed and 6-speed transmissions, Solenoid C may handle different combinations. Your repair manual will have a solenoid application chart for your specific transmission.

Is P0760 more common in high-mileage vehicles?

Yes. Shift solenoids have a finite life — most are designed for 100,000 to 150,000 miles. High mileage, infrequent fluid changes, and heat all accelerate solenoid wear. P0760 is very common on transmissions with over 100,000 miles that have never had a fluid change.

Can I replace just one solenoid or do I need to replace them all?

You can replace just the faulty one. However, if the transmission has high mileage and one solenoid has failed, others may follow soon. Replacing the full solenoid pack while the pan is already off is a cost-effective choice — you save on repeat labor.