P0563Średni
Napięcie systemu — wysokie
Układ napędowy
Sprawdź szczegóły →P2505
WysokiECM/PCM Power Input Signal – Incorrect Module Supply Voltage. The onboard computer detected a supply voltage deviation outside the acceptable range.
OBD-II (EN): ECM/PCM Power Supply Input Signal Circuit Low
Code P2505 signals a problem with the engine control module (ECM/PCM) supply voltage – the most common culprits are a weak battery, a faulty alternator, or corrosion on electrical terminals. Symptoms include unstable engine operation, starting difficulties, and random shutdown of electronic systems. Due to the critical role of the ECM/PCM in vehicle operation, a quick diagnosis by a mechanic with a professional scanner and electrical multimeter is recommended.
Symptoms
Check Engine Light (MIL) illuminated; sudden engine stalling or hard starting; unstable idle; RPM fluctuations; loss of power during acceleration; possible random resets of other electronic systems (ABS, transmission); in extreme cases, the vehicle may not start.
Possible causes
• Discharged or damaged battery – voltage supplying the ECM/PCM is too low • Faulty alternator – insufficient or unstable charging of the electrical system • Corroded or loose battery terminals and ground (GND) connections • Damaged fuses or relays in the ECM/PCM power supply circuit • Open circuit or short circuit in the control module power supply wiring harness • Less common: internal fault of the ECM/PCM module itself
Affected systems
ECM/PCM (moduł sterowania silnikiem)układ elektryczny / instalacja zasilaniaalternator i akumulatormagistrala CAN (pośrednio)
Related codes
P0600Krytyczny
Komunikacja z ECU — usterka łącza szeregowego (CAN)
Układ napędowy
Sprawdź szczegóły →P0562Średni
Napięcie systemu — niskie
Układ napędowy
Sprawdź szczegóły →Suggested Hybspec services
Based on the systems affected by this code, we will most likely start with:
Does code P2505 require professional diagnostics?
The code alone is not enough. To find the cause, you need to read live data, check freeze frame conditions, and compare with vehicle behavior. Book a diagnostic session.