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2021 TOYOTA C-HR
2.0L I4•FWD•CVT•gas•M20A-FKS
1 active safety recall on this vehicle — view recalls
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Repairs0Labor476Torque3059Fluid7DTC1942Battery1Maintenance0Recalls1
P0169moderate severityPowertrain

Incorrect Fuel Composition

on 2021 Toyota C-HR 2.0L I4 · FWD

What this code means

The PCM has detected that the fuel composition is outside expected parameters, common in flex-fuel systems monitoring ethanol content. Incorrect composition data can cause the engine to run rich or lean.

Symptoms

  • Rough running or hesitation
  • Hard starting
  • Check engine light on

Common causes

  • Faulty fuel composition sensor
  • Wrong fuel or bad fuel in tank
  • Sensor wiring or connector fault
  • Contaminated or water-laden fuel

Diagnostic steps

  1. Read fuel composition/ethanol sensor data with scan tool
  2. Verify correct fuel type is in the tank
  3. Inspect sensor wiring and connectors
  4. Test or replace fuel composition sensor if out of range
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