U0101Wysoki
Utrata komunikacji z TCM (sterownik skrzyni)
Komunikacja sieciowa
Sprawdź szczegóły →P1600
WysokiInternal error of the engine control unit (ECM/PCM) or disturbance in the module's backup power supply. Manufacturer-specific code.
OBD-II (EN): ECM/PCM Internal Error or Module Backup Power Disruption
Code P1600 indicates an internal error of the engine control module (ECM/PCM) or a disturbance in its power supply – it is a manufacturer-specific code, so its exact meaning depends on the vehicle brand. The most common causes are battery problems, corrosion of ground wires, or damage to the control unit itself. Due to the complexity of ECM diagnostics, a visit to a workshop with professional diagnostic equipment is recommended.
Symptoms
Check Engine light (MIL) illuminated. Possible problems with starting the engine or unstable operation. No response to throttle or delayed engine response. Other fault codes related to various vehicle systems may appear simultaneously. In some cases, the vehicle may enter limp mode with reduced power.
Possible causes
• Damaged or discharged battery – insufficient voltage supply to ECM/PCM leads to internal module errors • Corrosion or open circuit in the ECM/PCM ground circuit – poor ground causes unstable supply voltage • Damage to the internal EEPROM/Flash memory in the control unit – may result from overvoltage or component aging • Communication error on the CAN bus – disturbances in data exchange between vehicle control modules • Physical damage to ECM/PCM – moisture, vibration, or module overheating
Affected systems
ECM/PCM (jednostka sterująca silnikiem)układ zasilania modułówMagistrala CANukład zapłonowyukład paliwowy
Related codes
P0600Krytyczny
Komunikacja z ECU — usterka łącza szeregowego (CAN)
Układ napędowy
Sprawdź szczegóły →U0100Krytyczny
Utrata komunikacji z ECM (sterownik silnika)
Komunikacja sieciowa
Sprawdź szczegóły →Code P1600 appears in these brands
Go to messages and symptoms for your brand — there we analyze this code together with other typical alerts.
Suggested Hybspec services
Based on the systems affected by this code, we will most likely start with:
Does code P1600 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.