P0963 — Pressure Control Solenoid A Control Circuit High

Pressure-control solenoid A command: The electrical input is above its permitted range. This is an electrical finding, not an instruction to replace the monitored component. The letter A identifies a control channel, not a universal valve location. An electrical control-circuit result must be distinguished from the valve's hydraulic response.

Affected system: Transmission pressure-control solenoids

Symptoms

• Warning light may illuminate
• Related system function may be impaired
• Vehicle-specific symptoms vary

Possible causes

• Transmission fluid, hydraulic, solenoid, connector, or control-circuit issue
• Related wiring, connector, power or ground fault
• Vehicle-specific mechanical or control issue

What to check

• Record stored and pending codes and freeze-frame data
• Compare commanded and actual transmission data, inspect fluid condition and level according to the vehicle procedure, then test the relevant circuit and solenoid.
• Confirm measured values against the vehicle service information
• Retest under the conditions that set the code
• Compare commanded and actual transmission data, inspect fluid condition and level according to the vehicle procedure, then test the relevant circuit and solenoid.
• Repair the verified cause and confirm the code does not return

Also written as: P0963-00, P096300, PO963 (some scan tools add the fault-type byte, e.g. -00).