Ignition / MisfireHigh ImpactPetrol

P0306 — Diagnostic Trouble Code P0306

OBD-II diagnostic code P0306 relates to the ignition / misfire system. This code is logged when the ECU detects a parameter outside its expected operating range.

6+

Affected Brands

7+

ECU Platforms

2

Related Services

5

Related DTCs

Symptoms

What the driver typically experiences when P0306 is stored

!Check Engine Light (may flash)
iEngine misfires
iRough idle
iLoss of power

Why does P0306 appear after tuning?

This code may appear after ECU modifications when the affected system monitoring has not been fully recalibrated for the new operating parameters.

How proper calibration can address P0306

WEREMAP professional calibrations include comprehensive diagnostic management for all affected systems, preventing unnecessary fault codes while maintaining safe operation.

Related Tuning Services

Relevant services for the system behind P0306

Stage 1DTC Off

Related Diagnostic Codes

Codes from the same diagnostic system as P0306

P0300High Impact

Random/Multiple Cylinder Misfire Detected

P0304High Impact

Diagnostic Trouble Code P0304

P0305High Impact

Diagnostic Trouble Code P0305

P0302High Impact

Diagnostic Trouble Code P0302

P0303High Impact

Diagnostic Trouble Code P0303

Affected ECU Platforms

Bosch MG1CS002Bosch MG1CS015Keihin SH7058Bosch MED9.6Bosch ME9.7Bosch med7.6.2bosch me2.8

Commonly Affected Vehicles

PorscheMacanBosch MG1CS002
FordF150Bosch MG1CS015
HondaodysseyKeihin SH7058
FerrariFFBosch MED9.6
MBCLSBosch ME9.7
Alfa RomeoBreraBosch med7.6.2
MBMLbosch me2.8

Based on data from 6+ vehicle brands. P0306 is not limited to these models.

Frequently Asked Questions

What does P0306 mean?â–¼
OBD-II diagnostic code P0306 relates to the ignition / misfire system. This code is logged when the ECU detects a parameter outside its expected operating range.
Why does P0306 appear after ECU tuning?â–¼
This code may appear after ECU modifications when the affected system monitoring has not been fully recalibrated for the new operating parameters.
How do you prevent P0306 during remapping?â–¼
WEREMAP professional calibrations include comprehensive diagnostic management for all affected systems, preventing unnecessary fault codes while maintaining safe operation.
Which vehicles are affected by P0306?â–¼
P0306 is commonly found on Porsche, Ford, Honda, Ferrari, MB, Alfa Romeo vehicles equipped with Bosch MG1CS002, Bosch MG1CS015, Keihin SH7058, Bosch MED9.6 ECU platforms.
What other codes appear alongside P0306?â–¼
P0306 frequently appears together with P0300, P0304, P0305, P0302, P0303. These related codes typically originate from the same system modification and should be addressed together in the calibration.

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