C3681 Trouble Code

View C3681 obd/2 error code description and symptoms. C3681 engine photo

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.

C3681 Error Code Repair Process :

The rule of C3681 code when it comes to emissions-related vehicle repair is that any modification that changes the vehicle from a certified configuration to a non-certified configuration is considered tampering: this applies to both vehicle owners and repair facilities and is, therefore, a Federal offense. Replacing a catalyst with a straight pipe is one traditional example of brake fluid level sensor input short circuit to ground. Likewise, overriding the OBD C3681 error in system through the use of high-tech defeat devices or non-certified computer chips, for example, would also be considered tampering. The OBD system may, however, be repaired back to its original certified configuration with certified performance chips or appropriate aftermarket parts.

C3681 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.

Common Causes of C3681

A common cause of code C3681 is the failure of Brake Fluid Level Sensor Input Short Circuit To Ground, but there are several other possible causes as well, such as ;

Exhaust tube
Faulty select solenoid
Fuel injector leaks
Faulty select solenoid

C3681 code for all cars

You can view according C3681 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C3681 Fiat Grand Break

+C3681 Caterham 485r

+C3681 Datsun 15

+C3681 Sbarro Christelle

+C3681 International Harvester Scout

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