Hybspec

P1245

Średni

Code P1245 is a manufacturer code (P1xxx) with a variable meaning depending on the vehicle make. Most often it indicates a fault in the mass air flow (MAF) sensor circuit, the fuel injector needle position sensor circuit, or an alternator load too low detected by the ECM.

OBD-II (EN): Manufacturer Specific DTC

Code P1245 is a manufacturer code (range P1xxx) whose meaning depends on the vehicle make — in GM models it most often concerns the MAF sensor, in VAG vehicles (VW, Audi, Skoda, Seat) it indicates a problem with the injector needle sensor, and in other cars it can mean an alternator circuit fault. Symptoms most often include unstable engine operation, power loss, and increased fuel consumption. Due to the complexity and manufacturer dependence, diagnosis should be entrusted to a workshop with an appropriate scanner.

Symptoms

Unstable engine idle, difficulty starting, increased fuel consumption, engine power loss, jerking or hesitation during acceleration, Check Engine Light (MIL) on the dashboard, possible battery charging problems (in case of alternator fault).

Possible causes

• GM/Buick/Cadillac/Chevrolet: faulty or contaminated MAF sensor (mass air flow) • VW/Audi/Skoda/Seat: short to ground in the fuel injector needle position sensor circuit • Damaged or corroded sensor electrical connectors and wiring harnesses • Air leak between the MAF sensor and throttle body (false readings) • Alternator signal voltage too low recorded by ECM (in some models) • Faulty ECM/PCM controller (rarely)

Affected systems

Układ wtrysku paliwaUkład dolotowy / czujnik MAFUkład ładowania (alternator)Sterownik silnika ECM/PCM

Related codes

P0620Wysoki

Kod błędu P0620 oznacza nieprawidłowe działanie obwodu sterowania generatora (alternatora) – układ sterujący ładowaniem akumulatora wykrył nieprawidłowość w komunikacji lub działaniu alternatora.

Układ napędowy
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P1240Wysoki

Awaria zasilania czujnika (Sensor Power Supply Malfunction) — układ zasilania czujników silnika zgłosił nieprawidłowe napięcie lub utratę sygnału.

Układ napędowy
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Does code P1245 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.