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TuningBot DTC-Datenbank · v4.37.14

P1421 Diagnose-Fehlercode (11 Interpretationen)

11 herstellerspezifische Interpretationen bei 10 Herstellern in der TuningBot DTC-Datenbank.

P · AntriebsstrangEngineOBD2

Chevrolet

1 Interpretation
P1421
Intake Air Low Pressure Switch Circuit High Voltage Chevrolet · engine Datenzuverlässigkeit 80%

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.

Chrysler

1 Interpretation
P1421
Intake Air Low Pressure Switch Circuit High Voltage Chrysler · engine Datenzuverlässigkeit 62%

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 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 Interpretation
P1421
Catalyst Damage Ford · emissions Datenzuverlässigkeit 62%

The 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 Interpretation
P1421
Evaporative emission (EVAP) system - large leak Lexus · emissions Datenzuverlässigkeit 62%

The 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 Interpretation
P1421
Clogged Or Dirty Catalyst Mitsubishi · emissions Datenzuverlässigkeit 62%

The 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 Interpretation
P1421
Cold start emission control - malfunction Nissan · engine Datenzuverlässigkeit 62%

The 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 Interpretation
P1421
Exhaust gas recirculation (EGR) system - voltage high Subaru · emissions Datenzuverlässigkeit 80%

The 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 Interpretation
P1421
Evaporative emission (EVAP) canister purge valve - mechanical fault Suzuki · emissions Datenzuverlässigkeit 62%

The 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 Interpretation
P1421
EVAP Canister Gross Leak Toyota · emissions Datenzuverlässigkeit 62%

The 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 Interpretationen
P1421
Secondary air injection (AIR) valve/solenoid - short to ground VAG · emissions Datenzuverlässigkeit 62%

The 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
Gilt für Audi
P1421
Secondary Air Injection Solenoid Valve (N112): Short to Ground VAG · emissions Datenzuverlässigkeit 88%

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)
Gilt für Volkswagen

Verwandte und benachbarte Codes

So liest man P1421

P

Antriebsstrang: Motor, Getriebe und Antrieb.

1

Herstellerdefinierter Bereich: die Bedeutung kann je Marke abweichen.

421

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.

Kann TuningBot P1421 auf Dateiebene entfernen?

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