P258A - OBD II Trouble Code

Our automotive experts have put together the following information about the P258A diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P258A code.

OBD II Fault Code

• OBD II P258A

OBD-II Code Climate control systems will not work is defined as a Vacuum Pump Control Circuit/Open

Diesel vehicle's have a separate vacuum pump an reservoir because they cannot utilize vacuum from the engine the way a gasoline vehicle's can. The engine control module (PCM) tells the vacuum pump when to turn on an off. If the PCM cannot control the pump, it will set code P258A.

Climate control systems will not work Symptoms

• Climate control systems will not work

Common Problems That Trigger the P258A Code

• Powertrain Control Module (PCM) failure
• Vacuum pump failure
• Vacuum pump relay failure
• Wiring issue

Common Repairs Needed for the P258A Code

• Vacuum Pump Replacement