Fault code lookup

PowertrainP0301

Serious

Severity: Serious - have it checked soon

Cylinder 1 Misfire Detected

45 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 1 is not firing properly. The fuel in that cylinder is not burning as it should.

2Common causes

  1. Worn or fouled spark plug in cylinder 1
  2. Faulty ignition coil for cylinder 1
  3. Faulty fuel injector for cylinder 1
  4. Vacuum or intake air leak
  5. Low fuel pressure
  6. Low compression in cylinder 1

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 45

BrandCodeDescriptionSystem
Ashok Leyland CVP0301Cylinder 1 Misfire Detected SAEPowertrain
BAIC MotorP0301Cylinder 1 Misfire BrandPowertrain
Mercedes-BenzP0301Cylinder 1 Misfire Detected SAEPowertrain
BMWP0301Exhaust-damaging misfire BrandPowertrain
BYDP0301Cylinder 1 misfire BrandPowertrain
CheryP0301CYL No.1 MISS BrandPowertrain
ChryslerP0301Cylinder 1 misfire BrandPowertrain
DaewooP0301Cylinder 1 misfire BrandPowertrain
DaihatsuP0301Misfire BrandPowertrain
DFFSP0301Cylinder 1 misfire BrandPowertrain
DFFXP0301Cylinder 0 misfire BrandPowertrain
DFXKP0301Cylinder 1 Misfire BrandPowertrain
EOBDP0301Cylinder 1 misfire detected BrandPowertrain
FordP0301Cylinder 1 Misfire Detected SAEPowertrain
GeelyP0301Cylinder 1 Misfire BrandPowertrain
GMP0301Cylinder 1 Misfire Detected BrandPowertrain
Great WallP0301Cylinder 1 misfire BrandPowertrain
HafeiP0301Cylinder 1 Misfire Detected BrandPowertrain
HoldenP0301Cylinder 1 Misfire Detected BrandPowertrain
HondaP0301Cylinder 1 Misfire Detected SAEPowertrain
HyundaiP0301Cylinder 1 Misfire Detected SAEPowertrain
IsuzuP0301Cylinder 1 Misfire Detected SAEPowertrain
Land RoverP0301Single cylinder misfiring BrandPowertrain
MahindraP0301Cylinder 1 Misfire Detected SAEPowertrain
MaseratiP0301Cylinder 1 misfire BrandPowertrain
MazdaP0301Cylinder 1 Misfire Detected SAEPowertrain
MitsubishiP0301No.1 cylinder misfire detected BrandPowertrain
NissanP0301Cycle 1 misfire BrandPowertrain
OpelP0301Cylinder 1 Misfire Detected BrandPowertrain
PeroduaP0301Misfire BrandPowertrain
PeugeotP0301Cylinder 1 Misfire Detected SAEPowertrain
PorscheP0301Cylinder 1 Misfire Detected SAEPowertrain
ProtonP0301Cylinder 1 Misfire Detected BrandPowertrain
RenaultP0301Cylinder 1 Misfire Detected SAEPowertrain
SaabP0301Cylinder 1 Misfire Detected BrandPowertrain
MG (SAIC)P0301Misfire Cylinder 1 BrandPowertrain
SmartP0301Cylinder 1 Misfire Detected SAEPowertrain
SprinterP0301Cylinder 1 Misfire Detected SAEPowertrain
SubaruP0301Cylinder 1 Misfire Detected BrandPowertrain
SuzukiP0301Cylinder 1 misfire detected BrandPowertrain
SWM MotorP0301Cylinder 1 misfire BrandPowertrain
TataP0301Cylinder 1 Misfire BrandPowertrain
ToyotaP0301Cylinder 1 misfire BrandPowertrain
VolvoP0301ECM- XX: cylinder 1 BrandPowertrain
VolkswagenP0301Cylinder 1: misfire detected; Defective BrandPowertrain

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 3

These 7-character codes are manufacturer-specific variants of P0301 and may be reported by some scan tools.

BrandCodeDescriptionSystem
Mercedes-BenzP030100No description available Powertrain
SprinterP030100No description available Powertrain
SsangYongP030100No.1 cylinder - poor ignition BrandPowertrain

6Related codes

  • P0300 Random/Multiple Cylinder Misfire Detected
  • P0302 Cylinder 2 Misfire Detected
  • P0303 Cylinder 3 Misfire Detected
  • P0304 Cylinder 4 Misfire Detected
  • P0305 Cylinder 5 Misfire Detected
  • P0306 Cylinder 6 Misfire Detected
  • P0307 Cylinder 7 Misfire Detected
  • P0308 Cylinder 8 Misfire Detected
  • P0309 Cylinder 9 Misfire Detected
  • P030A Wheel Speed Sensor, Front Axle, Left Wheel. Short Circuit To Ground
  • P030B Tändning 'A' styrsignalkrets låg
  • P030C Tändning 'A' styrsignalkrets hög

Browse Pxxx codes or P030xx codes.

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