C0389 Mercury Cyclone OBD Code

OBD/2 C0389 error code description and symptoms.

HO2S Sensor Circuit Malfunction (HO2S-11) During testing the HO2S Heaters are checked for opens/shorts and excessive current draw.
The test fails when current draw exceeds a calibrated limit and/or an open or short is detected. Short to VPWR in harness or HO2S. Water in harness connector. Open VPWR circuit. Open GND circuit. Low battery voltage. Corrosion or poor mating terminals and wiring Damaged HO2S heater. Damaged PCM.

To check for an open circuit, trace along the length of the transmission control circuit, checking for breaks in the wiring. Repair any broken wiring and make sure all connectors are fully seated and locked.Pay close attention to connectors, looking for corrosion, bent or broken pins, or moisture in the connector. Repair any connector issues even if they are not specifically part of the transmission control circuit as they may serve a function in providing power to the transmission control circuit.

C0389 Mercury Cyclone Error Code Repair Process :

If your seatbelt passenger pretensioner circuit short to ground check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system C0389 and engine control unit are in charge of monitoring a bunch of different seatbelt passenger pretensioner circuit short to ground, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Mercury Cyclone C0389 OBD2 Code

A common cause of code C0389 is the failure of Seatbelt Passenger Pretensioner Circuit Short to Ground, but there are several other possible causes as well, such as ;

Exhaust tube
Faulty Air fuel ratio (A/F) Sensor 1 Bank 1
Engine Control Module (ECM)
Fuel Injectors circuit poor electrical connection

C0389 is a kind of Chassis Trouble Code

Diagnosing chassis noises can be one of the most frustrating problems technicians face. Fortunately, manufacturers have engineered noise, vibration and harshness (NVH) diagnostic techniques and equipment to find the source of the noise.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

About Us | Contact | Privacy

C0389 Mercury Cyclone OBD Code

C0389 Mercury Cyclone Error Code Repair Process :

Common Causes of Mercury Cyclone C0389 OBD2 Code

C0389 code for other Mercury cars