A0B1 — CAS: Selector Lever / Clutch Input Implausible

The CAS module cannot make sense of the input it uses to authorize starting. On a manual R56 that input is the clutch switch circuit, so this code usually describes a wiring or switch problem rather than an engine fault.

Common causes on MINI

• Failed or misadjusted clutch switch
• Aftermarket clutch switch bypass
• Damaged wiring between the clutch switch and CAS
• Previously cloned or replaced CAS module coded incorrectly

Documented repairs

2010 MINI Cooper S Crank No-Start: Crank Sensor Circuit & DME

2010 MINI Cooper S (R56, N14 1.6L Turbo)

A0B1A0B42BD42983

A 2010 MINI Cooper S cranked but would not start with no RPM at the DME. Scope testing traced it to a dead crank sensor signal bias inside the DME.

Read the diagnosis →

Components

• AGM Battery
• Camshaft Position Sensor
• Camshaft Position Sensor Connector
• Crankshaft Position Sensor
• Oil Pressure Sensor

Engines

• N14 1.6L Turbo

Models

• R56 MINI Cooper S

Repairs by System

• Electrical
• DME
• Engine Electrical
• No Start
• Starting Problems

Symptoms

• Extended Crank
• No Start
• Reduced Engine Power
• Running Rich
• Stalling

Procedures

• Wiring Repair
• Compression Testing
• DME Programming
• ISTA Diagnosis
• Oscilloscope Testing