Conditions for Setting the DTC

P0090 - P0092, P00C9, P00CA, P10E6 - P10E8, P10EA, P2294 - P2296, P233A - P233C 

Control Circuit = Commanded state does not match the actual state - For greater than 1 s

P163ACondition 1 

Q18A Fuel Pressure Regulator 1 - Electrical Current = Not within a calibrated range - For less than 1 s

Condition 2 

Q18A Fuel Pressure Regulator 1 - Control Circuit = High Resistance - For less than 1 s

P163BCondition 1 

Q18B Fuel Pressure Regulator 2 - Electrical Current = Not within a calibrated range - For less than 2 s

Condition 2 

Q18B Fuel Pressure Regulator 2 - Control Circuit = High Resistance - For less than 2 s