29E2 — Charge-Air Temperature Sensor Voltage Change Too Fast

The engine module saw the charge-air-temperature signal change faster than it considered plausible. Electrical intermittency and sensor or connector faults belong ahead of mechanical turbocharger conclusions.

Common causes on MINI

• Intermittent connection at the charge-air-temperature sensor
• Chafed wiring causing rapid signal changes
• Failed temperature-sensing element
• Connector terminal tension or contamination problem

Documented repairs

2013 MINI Cooper S Limp Mode: Wastegate Would Not Close

2013 MINI Cooper S Convertible (R57)

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A 2013 MINI Cooper S Convertible had low-boost and wastegate faults. Vacuum and camera testing showed the gate would not close, leading to turbo replacement.

Read the diagnosis →

Components

• Engine Oil Filter
• Engine Coolant
• Engine Oil
• Engine Oil Drain Plug
• Oil Filter Housing Gasket
• Exhaust Manifold Gasket

Models

• R57 MINI Cooper S Convertible

Repairs by System

• Diagnosis
• Engine
• Cooling
• Turbocharger

Symptoms

• Check Engine Light
• Reduced Power Warning

Procedures

• Fault Code Scan
• Coolant Service
• Oil and Filter Change
• Camera Inspection
• Intake Pressure Data Logging
• Turbo Oil Line Replacement