PowertrainP0308

Serious

Severity: Serious - have it checked soon

Cylinder 8 Misfire Detected

40 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

Cylinder 8 is not firing properly. The fuel in that cylinder is not burning as it should.

2Common causes

Worn or fouled spark plug in cylinder 8
Faulty ignition coil for cylinder 8
Faulty fuel injector for cylinder 8
Vacuum or intake air leak
Low fuel pressure
Low compression in cylinder 8

3Can I drive?

Serious · drive with care

Drive gently to a workshop. If the check-engine light is flashing, stop as soon as it is safe and have the car towed: a flashing light means the misfire can overheat and damage the catalytic converter.

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 40

Brand	Code	Description	System
Ashok Leyland CV	P0308	Cylinder 8 Misfire Detected SAE	Powertrain
BAIC Motor	P0308	Cylinder 8 Misfire Detected Brand	Powertrain
Mercedes-Benz	P0308	Cylinder 8 Misfire Detected SAE	Powertrain
BMW	P0308	Cylinder 8 Misfire Detected Brand	Powertrain
BYD	P0308	Cylinder 8 Misfire Detected Brand	Powertrain
Chery	P0308	Cylinder 8 Misfire Detected Brand	Powertrain
Daewoo	P0308	Cylinder 8 Misfire Detected Brand	Powertrain
Daihatsu	P0308	Misfire detection Brand	Powertrain
DFFS	P0308	Cylinder 8 misfire Brand	Powertrain
DFFX	P0308	Cylinder 8 Misfire Detected Brand	Powertrain
DFXK	P0308	Cylinder 8 Misfire Detected Brand	Powertrain
EOBD	P0308	Cylinder 8 misfire detected Brand	Powertrain
Ford	P0308	Cylinder 8 Misfire Detected SAE	Powertrain
Geely	P0308	Cylinder 8 Misfire Detected Brand	Powertrain
GM	P0308	Cylinder 8 Misfire Detected Brand	Powertrain
Great Wall	P0308	Cylinder 8 Misfire Detected Brand	Powertrain
Hafei	P0308	Cylinder 8 Misfire Detected Brand	Powertrain
Holden	P0308	Cylinder 8 Misfire Detected Brand	Powertrain
Honda	P0308	Cylinder 8 Misfire Detected SAE	Powertrain
Hyundai	P0308	Cylinder 8 Misfire Detected SAE	Powertrain
Isuzu	P0308	Cylinder 8 Misfire Detected SAE	Powertrain
Land Rover	P0308	Single cylinder misfiring Brand	Powertrain
Mahindra	P0308	Cylinder 8 Misfire Detected SAE	Powertrain
Maserati	P0308	Cylinder 8 Misfire Brand	Powertrain
Mazda	P0308	Cylinder 8 Misfire Detected SAE	Powertrain
Mitsubishi	P0308	No.8 cylinder misfire detected Brand	Powertrain
Nissan	P0308	Cycle 8 misfire Brand	Powertrain
Opel	P0308	Cylinder 8 Misfire Detected Brand	Powertrain
Perodua	P0308	Misfire detection Brand	Powertrain
Peugeot	P0308	Cylinder 8 Misfire Detected SAE	Powertrain
Porsche	P0308	Cylinder 8 Misfire Detected SAE	Powertrain
Proton	P0308	Cylinder 8 Misfire Detected Brand	Powertrain
Renault	P0308	Cylinder 8 Misfire Detected SAE	Powertrain
Saab	P0308	Cylinder 8 Misfire Detected Brand	Powertrain
MG (SAIC)	P0308	Cylinder 8 Misfire Detected Brand	Powertrain
Smart	P0308	Cylinder 8 Misfire Detected SAE	Powertrain
Suzuki	P0308	CYL 8 MISFIRE Brand	Powertrain
Tata	P0308	Misfire - Cylinder 8 Brand	Powertrain
Toyota	P0308	Cylinder 8 misfire Brand	Powertrain
Volkswagen	P0308	Cylinder 8: misfire detected; Defective 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.

5Extended variant codes 1

These 7-character codes are manufacturer-specific variants of P0308 and may be reported by some scan tools.

Brand	Code	Description	System
Porsche	P030800	P030000 to - Misfiring Brand	Powertrain

6Related codes

Browse Pxxx codes or P030xx codes.