With traction control, C0244 is part of the diagnostic code set relating to the six valves in the EBCM
Without traction control, all I can find is it being listed as part of a group of codes relating to wheel speed sensors, however this is in a group of 14 codes and there definitely isn't that many sensors.
Also, C0287:
DTC C0287, P1644, or P1689
Circuit Description
The EBCM supplies 5 VDC to the powertrain control module (PCM) on the delivered torque signal circuit. The PCM toggles this voltage to ground in order to create the delivered torque signal at the EBCM. A signal with a frequency of 128 Hz 5 percent and a duty cycle of 25 - 95 percent is a valid delivered torque signal. The percentage of duty cycle is proportionate to the percentage of delivered torque.
DTC Descriptors
This diagnostic procedure supports the following DTCs:
- DTC C0267 Delivered Torque Signal Malfunction
- DTC P1689 Traction Control Delivered Torque Output Circuit
Conditions for Running the DTC
- The ignition is ON.
- The engine is running at a speed greater than 450 RPM for 1 second.
Conditions for Setting the DTC
C0287
The electronic brake control module (EBCM) receives an invalid delivered torque signal for 300 milliseconds.
P1689
The powertrain control module (PCM) detects the delivered torque signal voltage as being less than
4.75 volts or greater than
5.25 volts .
Is it safe to assume you have traction control? I'm fairly certain C0287 only deals with traction-equipped vehicles.
You may have a look at the EBCM pigtail and the connector on the unit itself, my first thought would be that there is advanced corrosion or something. Faulty connection to the speed sensors, to the PCM for delivered torque signal, and possible faulty power/ground causing solenoid valve malfunctions. If not this, my next thought would be the EBCM itself is done for. Considering its location, a thorough check for tight electrical connections without corrosion is a must.