P11B4/004532

P11B4/004532 - Cam Adjustment Actuator B; Cylinder 5: Implausible Signal

Possible Symptoms

• Possible loss of power, due to AVS (Audi Valve Lift System) default position affecting lower (1000~3100 RPM) torque curve
• All non affected actuators are switched to the Large Valve Lift position.
• Fault code entry without EPC or Check Engine lights due to no deterioration of Exhaust Emissions

Possible Causes

• Wiring and/or connections (short circuit?)
• Voltage supply failure to the Cam Adjustment Actuators
• Faulty Engine Control Module
• Worn or damaged Camshaft/Cam Element(s)

Possible Solutions

• Check wiring and connections
• Check for battery voltage at Cam Adjustment Actuators
• Check Engine Control Module with [Output tests]
• Repair/Replace worn or damaged Camshaft/Cam Element(s)

Special Notes

• See the Ross-Tech forum post: - Case Study: P11A7 00 - Audi Valve Lift System - E888 engines
  • This Fault code is for the F375-Control element (10) for camshaft adjustment, Cylinder [5]
  • AVS system function when coolant temperature is above 14°F (–10°C).
  • Maximum of 3.0 amperes for each Cam Adjustment Actuator
• 2009-2012 Audi with V6 FSI AVS CALA or CALB engine, see TSB 15-12-25 or TPI 2031085 for possible updated actuator.
  • https://static.nhtsa.gov/odi/tsbs/2012/MC-10122800-9999.pdf NHTSA