PowertrainP0321

Serious

Severity: Serious - have it checked soon

Ignition/Distributor Engine Speed Input Circuit Range/Performance

30 brands affected · Generic SAE J2012 description.

Key terms: Catalytic converter: cleans the exhaust gases · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions

1What it means in plain English

This range covers ignition and engine-speed signals, including misfires and crankshaft or camshaft position sensors.

2Common causes

Worn or fouled spark plug
Faulty ignition coil
Vacuum or intake air leak
Low fuel pressure
Faulty crankshaft or camshaft position sensor
Low engine compression

3Can I drive?

Serious · drive with care

A failing crankshaft or camshaft sensor can cut the engine without warning, and a flashing check-engine light points to a misfire that can damage the catalytic converter. If the light is flashing, stop as soon as it is safe and have the car towed. Otherwise drive gently to a workshop; if it stalls or will not restart, have it towed.

This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.

4Brand data 30

Brand	Code	Description	System
Ashok Leyland CV	P0321	Transfer Case. Clutch. B Component. Operation Failure Brand	Powertrain
BAIC Motor	P0321	Ignition/Distributor Engine Speed Input Circuit Range/Performance Brand	Powertrain
BMW	P0321	Ignition/Distributor Engine Speed Input Circuit Range/Perf Brand	Powertrain
BYD	P0321	Crankshaft top dead center (TDC) missing teeth signal implausible Brand	Powertrain
Chery	P0321	TDC sensor signal implausible Brand	Powertrain
Daewoo	P0321	Ignition/Distributor Engine Speed Input Circuit Range/Performance Brand	Powertrain
DFFS	P0321	Crankshaft speed sensor signal fluctuates Brand	Powertrain
DFFX	P0321	Reference Mark Sensor Failure Brand	Powertrain
DFXK	P0321	Crankshaft top dead center signal fault Brand	Powertrain
EOBD	P0321	Tenning/fordeler motorhastighetsinngangskrets område/ytelse Brand	Powertrain
Geely	P0321	Crankshaft TDC tooth missing signal implausible Brand	Powertrain
GM	P0321	Ignition/Distributor Engine Speed Input Circuit Range/Performance Brand	Powertrain
Great Wall	P0321	Ignition/Distributor Engine Speed Input Circuit Range/Performance Brand	Powertrain
Hafei	P0321	Ignition/Distributor Engine Speed Input Circuit Range/Performance Brand	Powertrain
Holden	P0321	Crankshaft Position Sensor Signal Performance Brand	Powertrain
Honda	P0321	Ignition/Distributor Engine Speed Input Circuit Range/Performance SAE	Powertrain
Hyundai	P0321	Ignition/Distributor Engine Speed Input Circuit Range/Performance SAE	Powertrain
Isuzu	P0321	Ignition/Distributor Engine Speed Input Circuit Range/Performance SAE	Powertrain
Land Rover	P0321	Ignition/Distributor Engine Speed Input Circuit Range/Performance Brand	Powertrain
Mitsubishi	P0321	Ign/Dist ENG.SPD input range Brand	Powertrain
Opel	P0321	Ignition/Distributor Engine Speed Input Circuit Range/Performance Brand	Powertrain
Peugeot	P0321	Ignition/Distributor Engine Speed Input Circuit Range/Performance SAE	Powertrain
Porsche	P0321	Ignition/Distributor Engine Speed Input Circuit Range/Performance SAE	Powertrain
Proton	P0321	Ign/Dist ENG.SPD input range Brand	Powertrain
Saab	P0321	Ignition/Distributor Engine Speed Input Circuit Range/Performance Brand	Powertrain
MG (SAIC)	P0321	Ign./Distributor Eng.Speed Inp.Circ. Range/Performance Brand	Powertrain
Suzuki	P0321	Ignition/Distributor Engine Speed Input Circuit Range/Performance SAE	Powertrain
Tata	P0321	Ignition/Distributor Engine Speed Input Circuit Range/Performance Brand	Powertrain
Toyota	P0321	Ignition/distributor engine speed input circuit range/performance Brand	Powertrain
Volkswagen	P0321	Engine speed sensor (G28): implausible signal Brand	Powertrain

Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.

5Related codes

Browse Pxxx codes or P032xx codes.