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2008 MERCEDES-BENZ S65 AMG
6.0L V12 BiTurbo M275•RWD•AUTOMATIC•gas•M275•turbo
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Repairs423Labor488Torque3420Fluid8DTC1460Battery1Maintenance0Recalls0
P0062low severityPowertrain

HO2S Heater Control Circuit (Bank 2 Sensor 3)

on 2008 Mercedes-Benz S65 AMG 6.0L V12 BiTurbo M275 · RWD

What this code means

The heater control circuit for bank 2 sensor 3 has a general fault. Sensor heating is impaired, delaying accurate readings.

Symptoms

  • Check engine light on
  • Failed emissions readiness
  • Minor fuel economy loss

Common causes

  • Faulty O2 sensor heater
  • Blown heater fuse
  • Wiring or connector damage
  • Failed PCM driver

Diagnostic steps

  1. Scan and confirm code
  2. Check heater circuit fuse
  3. Measure heater resistance and voltage
  4. Inspect wiring to sensor
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