P0762 code definition
The P0762 code indicates that the car’s computer has detected unusual operation within shift solenoid C.
What the P0762 code means
Your automatic transmission is monitored by the car’s computer, which is responsible for ensuring that all components work together correctly. The P0762 code indicates a problem with the shift solenoid C within the transmission. Your transmission has several shift solenoids that are used to help manage the transfer of transmission fluid and to change gears while driving.
What causes the P0762 code?
While the P0762 code indicates that shift solenoid C is stuck on, it does not necessarily indicate that the solenoid has failed. In fact, there are many different causes of this code, including the following:
- Low transmission fluid
- Burnt transmission fluid
- Dirty/contaminated transmission fluid
- A faulty shift solenoid
- A loose connection at the solenoid
- Short or open in the shift solenoid C wiring harness
- An internal blockage within a transmission fluid channel that prevents fluid transfer
- A faulty transmission control module (rare)
- A faulty PCM (rare)
What are the symptoms of the P0762 code?
When your car’s computer sets the P0762 code, there may be no symptoms noticed at all, other than the Check Engine Light coming on. Your transmission may shift normally. However, you may notice one or more symptoms depending on the situation. These can include:
- Harsh shifts
- Transmission will not shift
- Transmission stuck in “limp-home” mode
- Slipping transmission
- Transmission overheating
- Reduced fuel economy
How does a mechanic diagnose the P0762 code?
In order to diagnose the underlying cause of the P0762 code, a mechanic will first need to connect an OBD II scanner to your car’s computer. He or she will read the codes stored and then clear them. The car will then be test driven to see if the codes reset.
The next step will be to check the level and condition of the transmission fluid. If the fluid is burned or dirty, the mechanic may change the fluid and test drive the car again. If the fluid is low, the mechanic will top it off and test drive the car. If debris or contaminants are found in the fluid, it will be drained and the transmission possibly flushed.
If no problem is found with the fluid, the mechanic will inspect shift solenoid C, as well as the connector and wiring harness. Any open or short will need to be repaired, and the solenoid may need to be tested outside of the vehicle to verify operation.
It may also be necessary to manually check internal transmission fluid pressure using a gauge. If the pressure is low, the mechanic will continue to diagnose the problem, which could include the pump, internal fluid passages and more.
Once a repair is made, the mechanic will test drive the car once more to verify that the code does not return. Note that in most instances, the P0762 code is related to transmission fluid condition/level.
Common mistakes when diagnosing the P0762 code
One of the most common mistakes here is not verifying fluid level and condition prior to replacing shift solenoid C. Additionally, some mechanics may replace shift solenoid C without first testing the solenoid’s circuit for malfunctions.
How serious is the P0762 code?
Whether you’re experiencing any drivability issues or not, code P0762 is a serious situation. Prolonged driving can cause serious damage to your transmission, so have it repaired immediately.
What repairs can fix the P0762 code?
The exact repair needed to fix the P0762 code will depend on the underlying cause. However, it may be one of the following:
- Topping off low transmission fluid
- Draining old transmission fluid and refilling with fresh fluid
- Replacing a faulty shift solenoid C
- Replacing or repairing the solenoid wiring harness
- Replacing the PCM or TCM (rare)
Additional comments for consideration regarding the P0762 code
Transmission problems require a professional diagnosis simply due to the number of potential variables. If you are experiencing a P0762 code in your car, have it repaired right away to prevent further damage.
Need help with a P0762 code?
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