Advanced Diagnostics
Advanced Diagnostics - DTC P2826: Line Pressure Solenoid Valve A Low InputGeneral Description
Line pressure solenoid valve A is installed on the transmission housing. It is controlled by the ON/OFF signal from the powertrain control module (PCM) to regulate line pressure to low line pressure or to normal line pressure. The PCM commands the driver circuit to turn on line pressure solenoid valve A. The circuit detects malfunctions such as a circuit short or open, and sends back a return signal during the PCM's command. When the return signal does not match the PCM command to turn on line pressure solenoid valve A, the PCM detects a malfunction and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type, OBD Status
Enable Conditions
Malfunction Threshold
The return signal does not match the command to turn on line pressure solenoid valve A for at least 1 second.
Possible Cause
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
- Line pressure solenoid valve A PLA line short to ground
- Line pressure solenoid valve A internal circuit short
- Line pressure solenoid valve A power supply line open
- Line pressure solenoid valve A power supply line short to ground
- PCM internal circuit failure
Confirmation Procedure
With the HDS
None.
With the Driving Pattern
1. Start the engine, and let it idle until the radiator fan comes on.
2. With the brake pedal pressed, shift to D and wait for at least 5 second.
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected, the MIL comes on and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM memory.
Conditions for clearing the DTC
The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the battery.