30BE
Moderate30BE — Implausible Injector Calibration Values
Description
What the Code Means
Code 30BE indicates that the injector calibration values are not plausible. This fault often appears after injector replacement if the injectors were not correctly coded into the engine control module (DME). An injector fault is also possible.
The BMW injection system uses individual calibration values for each injector, stored in the DME. These values compensate for manufacturing tolerances and ensure precise fuel delivery. When the coded values don't match, the DME can't correctly calculate the amount of fuel injected.
Symptoms
Symptoms
- Engine: possible rough idle
- Indicators: Check Engine light comes on
Causes and fixes
Diagnosis and Repair
Step 1: Check Injector Coding
Using ISTA diagnostic equipment, read the current injector coding values from the DME.
Step 2: Recode the Injectors
Compare the read values with the data printed on each injector body. If they don't match, recode with the correct values.
Step 3: Replace the Faulty Injector
If the fault persists after recoding, replace the faulty injector. Use only genuine BMW injectors (part number 13537585261-12).
Possible secondary damage
Secondary Problems
Left alone, 30BE can turn into:
- Misfires from an incorrect air-fuel mixture
- Catalytic converter damage from unburned fuel
Fix the fault as soon as possible to avoid expensive exhaust system repairs.