B1250Średni
Usterka obwodu wewnętrznego czujnika temperatury powietrza. Kod wskazuje na problem z czujnikiem lub jego obwodem elektrycznym w systemie klimatyzacji/ogrzewania pojazdu.
Nadwozie
Sprawdź szczegóły →B1240
NiskiFailure of the Rear Washer Pump Relay Circuit. The code indicates a fault in the electrical system controlling the rear washer pump.
OBD-II (EN): Rear Wiper Pump Relay Circuit Malfunction
Code B1240 means a fault in the rear washer pump relay circuit – the symptom is the rear washer not working. Causes may include a damaged relay, blown fuse, short circuit in the wiring harness, or pump failure. We recommend diagnosis at a workshop using an OBD-II scanner to precisely locate the source of the fault.
Symptoms
Rear window washer does not work or operates incorrectly. No fluid delivery to the rear window washer. In some vehicles, a washer system error message may appear on the dashboard. The front washer system usually remains operational.
Possible causes
• Damaged or blown rear washer pump relay • Open or short circuit in the electrical circuit powering the pump • Damaged rear washer pump • Corrosion or damage to electrical connectors in the relay circuit • Damaged Body Control Module (BCM) responsible for controlling the relay
Affected systems
tylny układ spryskiwaczyobwód elektryczny nadwoziamoduł sterowania nadwoziem (BCM)przekaźnik pompy spryskiwacza
Related codes
Does code B1240 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.