P1252 P1252 OBD Code Definition: P1252 Pedal Correlation PDS1 and LPDS High P1252 OBD Code Description: OBD Code P1252 Pedal Correlation PDS1 and LPDS High OBD Code P1252 Pressure Regulator Control Solenoid Valve No. 2 Circuit Malfunction. OBD Code P1252 Pressure Regulator Control Solenoid Valve No. 2 Circuit Malfunction OBD Code P1252 Pressure Regulator Control Solenoid Valve No. 2 Circuit Malfunction. OBD Code P1252 Pressure Regulator Control Solenoid Valve No. 2 Circuit Malfunction.