Ignition / MisfireHigh ImpactPetrol

P0346 — Diagnostic Trouble Code P0346

OBD-II diagnostic code P0346 relates to the ignition / misfire system. This code is logged when the ECU detects a parameter outside its expected operating range.

3+

Affected Brands

3+

ECU Platforms

1

Related Services

2

Related DTCs

Symptoms

What the driver typically experiences when P0346 is stored

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

Why does P0346 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 P0346

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 P0346

DTC Off

Related Diagnostic Codes

Codes from the same diagnostic system as P0346

P0341High Impact

Diagnostic Trouble Code P0341

P0018Moderate Impact

Diagnostic Trouble Code P0018

Affected ECU Platforms

Bosch MED17.8.31 MED17.5.4Bosch MED17.7.3Siemens/Continental SIMOS8.5

Commonly Affected Vehicles

Land RoverRange RoverBosch MED17.8.31 MED17.5.4
MBGLBosch MED17.7.3
AudiA8Siemens/Continental SIMOS8.5

Based on data from 3+ vehicle brands. P0346 is not limited to these models.

Frequently Asked Questions

What does P0346 mean?â–¼
OBD-II diagnostic code P0346 relates to the ignition / misfire system. This code is logged when the ECU detects a parameter outside its expected operating range.
Why does P0346 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 P0346 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 P0346?â–¼
P0346 is commonly found on Land Rover, MB, Audi vehicles equipped with Bosch MED17.8.31 MED17.5.4, Bosch MED17.7.3, Siemens/Continental SIMOS8.5 ECU platforms.
What other codes appear alongside P0346?â–¼
P0346 frequently appears together with P0341, P0018. These related codes typically originate from the same system modification and should be addressed together in the calibration.

Ready to Get Started?

Create your free account and access our full vehicle database and tuning services.

Create Free Account