The control module detected that the signal in the Intake Air Low Pressure Switch circuit stayed above the expected operating range. This is the manufacturer-specific definition used by Chevrolet.
TuningBot DTC-Datenbank · v4.37.14
P1421 Diagnose-Fehlercode (11 Interpretationen)
11 herstellerspezifische Interpretationen bei 10 Herstellern in der TuningBot DTC-Datenbank.
Chevrolet
1 Interpretation
Chrysler
1 InterpretationThe control module detected that the signal in the Intake Air Low Pressure Switch circuit stayed above the expected operating range. This is the manufacturer-specific definition used by Chrysler.
Empfohlene Prüfungen
- Perform a full module scan
- Review freeze-frame and occurrence data
- Confirm the exact vehicle, ECU and software context
- Inspect relevant wiring and connectors
- Check applicable OEM service information
Ford
1 InterpretationThe control module detected a fault associated with the Catalyst Damage circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Ford.
Lexus
1 InterpretationThe control module detected a condition consistent with a leak affecting the Evaporative emission (EVAP) system - large. This is the manufacturer-specific definition used by Lexus.
Mögliche Ursachen
- EVAP canister
- EVAP canister purge valve
- hose leak
Mitsubishi
1 InterpretationThe control module detected a fault associated with the Clogged Or Dirty Catalyst circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Mitsubishi.
Nissan
1 InterpretationThe control module detected improper operation of the Cold start emission control. This is the manufacturer-specific definition used by Nissan.
Mögliche Ursachen
- Intake/exhaust leak/blockage
- mechanical fault
- idle speed control (ISC) system
- ignition control
- engine coolant temperature (ECT) sensor
- HO2S
Subaru
1 InterpretationThe control module detected that the Exhaust gas recirculation (EGR) system voltage stayed above the expected range. This is the manufacturer-specific definition used by Subaru.
Mögliche Ursachen
- Wiring open/short to positive
- EGR solenoid
- ECM
Suzuki
1 InterpretationThe control module registered the fault condition described as "Evaporative emission (EVAP) canister purge valve - mechanical fault". This is the manufacturer-specific definition used by Suzuki.
Mögliche Ursachen
EVAP canister purge valve
Toyota
1 InterpretationThe control module detected a condition consistent with a leak affecting the EVAP Canister Gross. This is the manufacturer-specific definition used by Toyota.
VAG
2 InterpretationenThe control module detected a short circuit to ground in the Secondary air injection (AIR) valve/solenoid circuit. This is the manufacturer-specific definition used by Audi.
Mögliche Ursachen
- Wiring short to ground
- AIR valve/ solenoid
The control module detected a short circuit to ground in the Secondary Air Injection Solenoid Valve (N112) circuit. This is the manufacturer-specific definition used by Volkswagen. Volkswagen Group tools also report it as fault code 17829. Documented across Volkswagen Group applications (Audi, SEAT and Škoda included).
Mögliche Ursachen
- Secondary Air Injection Solenoid Valve (N112) faulty
- Secondary Air Pump Relay (J299) faulty
Empfohlene Prüfungen
- Check Secondary Air Injection Solenoid Valve (N112)
- Check Secondary Air Pump Relay (J299)
Verwandte und benachbarte Codes
So liest man P1421
Antriebsstrang: Motor, Getriebe und Antrieb.
Herstellerdefinierter Bereich: die Bedeutung kann je Marke abweichen.
Spezifischer Fehlerindex innerhalb des Subsystems.
Häufige Fragen zu P1421
Was bedeutet P1421?
Diagnose-Fehlercode (11 Interpretationen). The control module detected that the signal in the Intake Air Low Pressure Switch circuit stayed above the expected operating range. This is the manufacturer-specific definition used by Chevrolet.
Ist P1421 generisch oder herstellerspezifisch?
P1421 ist ein herstellerspezifischer Code. In dieser Datenbank ist er dokumentiert für: Chevrolet, Chrysler, Ford, Lexus, Mitsubishi, Nissan, Subaru, Suzuki, Toyota, VAG. Dieselbe Nummer kann bei anderen Marken etwas anderes bedeuten.
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Das System hinter diesem Code verstehen: Lambdasonden
