BMW E46 3 Series / Z4 / X3 MS45.1 & MS45.0 DME Repair Service

Description: Repair service for BMW E46 3 Series, Z4, and X3 models with M54/M56 engines equipped with MS45.1 or MS45.0 DME units. Don’t replace—repair with us and get a 1-year warranty!

Supported Fault Codes

These codes often mean a defective processor requiring a new DME—unless you choose our repair service:

• 2774 - Engine cut off time
• 28B2 - RPM limiting: reset
• 27A1 - Electronic throttle controller: start check
• 2830 - DME RAM self-test: checksum
• 2796 - Electronic throttle controller: adaptation wrong
• 2869 - DME Self Diagnostics: RAM-Check Failed
• 286B - DME Self Diagnostics: Multi-output Module
• P16A0 - Internal Control Module Memory Check Sum Error (Boot Software)
• P16A1 - Internal Control Module Memory Check Sum Error (Application Software)

Compatible Part Numbers

Common Issues We Fix

• Ignition Coil Misfire: Messed-up ECU signals causing cylinder misfires—rough idling or a weak engine.
• No Pulse to Injector(s): ECU stops signaling injectors, leading to poor fuel flow or no-start.
• Cylinder Troubles: Specific cylinders (e.g., 1 or 3) fail due to ECU glitches.
• No Communication: ECU won’t connect to diagnostic tools—often internal damage.
• Bad or Corrupt Software: Glitchy firmware causing error codes or shutdowns.
• Power Problems: Voltage issues or fried components disrupting performance.
• Sensor Mix-Ups: ECU misreads sensor data, triggering limp mode.

Our Repair Process

We tackle these issues with precision—repairing circuits, reprogramming software, or replacing faulty parts. Each DME is fully tested before return.

Signs You Need This Repair

• Check engine light stays on
• Engine sputters or cuts out
• Poor gas mileage
• Car won’t start
• No ECU response on scanner

Warranty: 1-year warranty on all repairs.