What does P0698 Mean? Regarding the P0698 code, it would probably be worthwhile to carefully inspect the wire harness near the intake manifold bracket. This is done most easily from below the car in the area near the oil filter. When you see P0698 engine fault code on your engine code reader this description will help you. engine code P0698P0698 fixobd P0698dtc P0698obd code P0698obd2 P0698P0698 car codediagnostic code P0698car code P0698check engine code P0698fehlercode P0698P0698 fiatcodigo P0698codigo falla P0698P0698 kody b??dówcodigo de falla P0698 What are the common causes of P0698 ? A large air leak at or near the number one oxygen sensor would also cause a lean mixture. Faulty IMRC actuator relay (if equipped) Some aftermarket accessories and performance modifications How do you troubleshoot P0698 ? Electrical connectors, wiring and any components related to the "C'" circuit should be replaced or repaired if they were cited as problems during the diagnostic stage. The vehicle should be tested following any repairs. This will verify whether or not the trouble code has been solved properly. Searches related to P0698 - Sensor Reference Voltage 'C' Circuit Low p0698 ford p0698 trouble code duramax p0698 hyundai p0698 code vw p0698 p0698 vw crafter ford fault code p0698 p0698 skoda