P2509 - OBD II Trouble Code
By Brad Kava
January 31, 2017
Our automotive experts have put together the following information about the P2509 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 P2509 code.
What Does P2509 Code Mean?
OBD-II Code P2509 is defined as a ECM/PCM Power Input Signal Intermittent
The engine computer (PCM) relies on a constant power supply from the Battery. If the PCM does not have sufficient power supply, code P2509 will be set.
P2509 Symptoms
- Engine may not start
- Engine may stall
Common Problems That Trigger the P2509 Code
- Powertrain Control Module (PCM) failure
- Powertrain Control Module (PCM) power relay failure
- Wiring issue
About the Author
Brad Kava is an automotive expert at RepairPal, the leading online source of auto repair resources and estimates. With many ASE Master certified mechanics on staff who have decades of experience, RepairPal knows all the fine points of car repair.
Related Questions
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Getting error code p2509 but vehicle runs but rough idle
Power input signal intermittent
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