Corrections Available for BMW Intermittent Power Loss
This bulletin applies to all BMW models with the N20, N26 and N55 engines, produced before Nov. 20, 2015. Intermittently, the engine may experience a loss of power along with a Drivetrain Malfunction message stored in the digital motor electronics memory:
E-Series:
2775 (air mass plausibility, air mass too low)
2C57 (charging pressure control plausibility, pressure too low)
2DCE (Valvetronic system: no adjustment possible)
3164 (fuel tank ventilation system, 2nd inlet point malfunction)
F-Series:
102002 (air mass plausibility, air mass too low)
120308 (charging pressure control plausibility, pressure too low)
133B04 (Valvetronic system: no adjustment possible)
191C02 (fuel tank ventilation system, 2nd inlet point malfunction)
Using the latest version of ISTA, perform all recommended test plans. Visually check that there are no leaks in the lines or connections of the charge air system. If a fault is detected during testing, complete all steps as specified to identify the cause. If faults were detected, make the necessary mechanical repairs and program the vehicle to the specified integration level using ISTA/P 3.57.0 or higher. If no faults were detected, program the vehicle to update the DME software.
About the Author
Information courtesy of Mitchell 1
Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.
Mike Mavrigian
Motor Age Editor
Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.