OBD Codes List

Diagnostic reference · P281B

P281B

Pressure Control Solenoid H Control Circuit/Open

System
Transmission (P code)
Lamp
Check Engine Light
Category
Powertrain - Transmission

What it means

P281B means Pressure Control Solenoid H Control Circuit/Open.

Where it lives

For P281B, the solenoid sits on the circuit this code reports. The description of P281B reports the solenoid as open.

Check these first

  • An open in the pressure control solenoid H control circuit
  • A short to ground or voltage on the pressure control solenoid H control wire
  • A failed pressure control solenoid H
  • A corroded or backed out pin at the pressure control solenoid H connector

What to do next

  1. Read pressure control solenoid H status on a scan tool
  2. Command pressure control solenoid H on and off
  3. Test the pressure control solenoid H control circuit for open and short faults
  4. Check the pressure control solenoid H connector pins
  5. Replace pressure control solenoid H if the circuit tests good
  6. Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.