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2026 VOLKSWAGEN ID.BUZZ
Pro S Plus Single Motor RWD•RWD•AUTOMATIC•ev
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Repairs0Labor318Torque63Fluid5DTC786Battery1Maintenance0Recalls0
16500moderate severityPowertrain

Engine Coolant Temperature Circuit Malfunction

on 2026 Volkswagen ID.Buzz Pro S Plus Single Motor RWD · RWD

What this code means

The engine coolant temperature sensor circuit is malfunctioning (OBD P0116). The signal is erratic or out of expected range.

Symptoms

  • Poor cold start
  • Check engine light on
  • Erratic temperature gauge

Common causes

  • Faulty coolant temperature sensor
  • Wiring or connector fault
  • Low coolant level
  • Thermostat stuck

Diagnostic steps

  1. Read live coolant temp data
  2. Compare with actual engine temperature
  3. Inspect sensor wiring and connector
  4. Test sensor resistance across temperatures
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