P0176

Fuel Composition Sensor Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Unstable engine operation
Increased fuel consumption
Problems starting the engine
Check Engine light comes on

Causes

Fuel composition sensor malfunction
Open or short circuit in wiring harness
Poor contact in the sensor connector
Problems with the ECU

How to Fix

Check the integrity of the wiring harness and contacts in the sensor connector
Check the resistance and voltage at the sensor
Replace the fuel composition sensor if necessary
Scan the system for other errors

Related codes

P0170 P0171 P0172 P0173 P0174 P0175