My Chevy is not shifting properly and has a code P0974. What could be the issue?

Shift solenoids are used by the ECU to force pressurized hydraulic fluid (a.k.a. the transmission fluid) to move different parts like clutches and gears. If there is an unusually high-voltage signal coming from the shift solenoid A control circuit, a P0974 DTC will be saved.

P0974 is a diagnostic trouble code (DTC) for "Pressure Control Solenoid B Control Circuit Low". This code is related to the transmission system in a vehicle and indicates that the pressure control solenoid B is not functioning properly.

The P0974 diagnostic trouble code is one of the more serious OBD2 code that you can have. When a shift solenoid goes bad, you can experience a number of drivability problems that include usually hard shifts and a complete failure to change gears.

Symptoms for a P0974 Transmission shift solenoid code


1. Erratic shifting
2. Slipping gears
3. Delayed shifting
4. Overheating transmission
5. Rough shifting
6. No shifting
7. Check engine light on
8. Flashing check engine light
9. Transmission fluid leaks
10. Burning smell from transmission

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