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P0169 — Incorrect Fuel Composition

The fuel composition sensor or adaptive fuel system has detected an unexpected fuel type or blend.

Severity: MediumRepair: $0-$500Difficulty: Easy

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Common symptoms of P0169

Common causes of P0169

Repair cost & difficulty

Typical cost to fix P0169: $0-$500 · Difficulty: Easy

Pro tip: If you accidentally put the wrong fuel in, you may need to drain the tank. If correct fuel was used, the fuel composition sensor may have failed.

Vehicles commonly affected

Flex-fuel vehicles, some modern vehicles

Related trouble codes

P0177

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ScanFixAI is a diagnostic aid, not a substitute for professional repair. Cost estimates are typical ranges and vary by vehicle and region.