P2507ECM/PCM Power Input Signal Low

How the car detects it: P2507 reports that a supply input of the engine module sits too low. Makers read this differently. Mazda calls it a low PCM battery voltage input: on 2013–2020 models from CX-5 to MX-5 it appears together with P2610 when the engine was started three or more times after stops shorter than 15 s while the 15 A room fuse was pulled for transport; it concerns 2016 and later models and, as a stored past fault, usually goes unnoticed. On the 2024 CX-90 a loosely seated 25 A fuse F1 led to P2507, many warning lamps and a no-start. Ford's 2023 6.7 L diesel instead watches the module's internal 5 V rail and sets P2507 below 4.2 V, monitored continuously over about 5 s. P0562 is the system-voltage code; P2508 is the high case.
What you may notice: Often no symptom, code found during service (Mazda)
Several warning lamps, blank displays
No-start in severe cases
Likely causes: LikelySupply fuse missing, pulled for transport or not fully seated
PossibleWeak battery or voltage dips during repeated starts
PossibleCorroded supply wire, ground or relay contact
RareInternal 5 V supply of the module failing (Ford diesel)
Inspection (ITP): Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
Repair: Medium · Often possible to do yourself.Typical cost: €0 – €800
Related codes: P2505
P2508
P0562
P2610

Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.