Here are standard and unique error codes for the Citroen Ds3, received through the on-board diagnostic connector of the OBD-II system of the car, with a brief decoding.

The P0171 diagnostic trouble code indicates that the engine control module (ECM) has detected a lean air-fuel mixture on Bank 1 of the engine.

In simple terms, this means the engine is receiving too much air and not enough fuel.

When P0171 appears, your Check Engine Light will turn on, and the vehicle may begin to run rough, hesitate during acceleration, or consume more fuel than usual.

This is one of the most common OBD2 codes on gasoline engines worldwide.

The P0300 diagnostic trouble code indicates that the engine control module (ECM) has detected random or multiple cylinder misfires.

When this code appears, your Check Engine Light will usually turn on, and the vehicle may run rough, shake, or lose power.

P0300 is one of the most common OBD2 codes found on gasoline engines worldwide.

The P0299 trouble code indicates that your vehicle’s engine control module (ECM) has detected that the turbocharger is producing less boost pressure than expected.