What it means
The calibration data programmed for pressure control solenoid G does not match the format expected by the transmission controller.
At a glance
- Usually lights the check-engine light
How it works
Pressure control solenoid G regulates transmission hydraulic pressure under the controller's commands. The controller checks whether the calibration data associated with solenoid G is in a format supported by its software. This code sets when that specific calibration data is incompatible, which can interfere with pressure control and shifting.
Common causes
Most likely first.
- Replacement solenoid incompatible with software version
- Calibration code format does not match controller version
Symptoms
- Check engine or transmission warning light may be on
- Harsh, delayed, or erratic shifting
- Transmission may enter a limited operating mode
How to diagnose it
- Record all transmission codes and freeze-frame data with a scan tool, especially any indication that the fault followed solenoid G or controller service.
- Verify the installed solenoid G and its calibration record against the transmission and the controller's software version.
- Inspect the solenoid G connector and nearby harness for loose terminals, corrosion, fluid intrusion, or damaged insulation.
- Review solenoid G calibration status and related transmission-controller faults with a scan tool that can access transmission data.
- Check that solenoid G's calibration code format is supported, then perform any required initialization or programming using manufacturer instructions.
Common fixes
- Correct the solenoid G calibration entry or format so it matches the controller's requirements.
- Repair or reconnect the solenoid G wiring and connector if inspection finds a fault.
- Install a compatible pressure control solenoid G if the fitted unit does not match the transmission software.
- Apply a manufacturer-approved controller software update if required for the solenoid G calibration.
Can I keep driving?
Avoid towing and demanding driving while shifting is harsh or delayed. If the transmission enters a limited operating mode or gear changes become unreliable, stop when safe and have the vehicle recovered to limit further damage.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.