P2506 - OBD II Trouble Code

Our automotive experts have put together the following information about the P2506 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 P2506 code.

OBD II Fault Code

• OBD II P2506

OBD-II Code Engine may not start is defined as a ECM/PCM Power Input Signal Range/Performance

The engine computer (PCM) relies on a constant power supply from the Battery. If the PCM does not have sufficient power supply, code P2506 will be set.

Engine may not start Symptoms

• Engine may not start
• Engine may stall

Common Problems That Trigger the P2506 Code

• Powertrain Control Module (PCM) failure
• Powertrain Control Module (PCM) power relay failure
• Wiring issue