C3187 Trouble Code

View C3187 obd/2 error code description and symptoms. C3187 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.

At this point we are assuming that the fuses and relays are good. You will need to locate the PCM/TCM and the power input signal circuit using your vehicle information source. Unplug the connector from the PCM/TCM, place the ignition switch in the ON position, and probe the appropriate circuit with the positive test lead of the DVOM.

C3187 Error Code Repair Process :

If your vehicle failed a C3187 test and the C3187 Check Engine Light is NOT on, chances are you have a problem with the OBDII system, a burned out MIL lamp, or a faulty catalytic converter. The converter is essentially an afterburner that cleans up the exhaust after it exits the engine. The OBDII system uses air bag crash sensor #2 feed/return circuit open a ownstream oxygen sensor to monitor the efficiency of the converter, and it should detect a drop in converter efficiency if the converter has been contaminated or is failing (ignition misfiring, leaky exhaust valves, and oil burning can all damage the converter). What you want to look air bag crash sensor #2 feed/return circuit open: Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression. Use your OBD Express DIY to look at the oxygen sensor outputs, coolant temperature, airflow, calculated engine load, and inlet air temperature.

C3187 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 C3187

A common cause of code C3187 is the failure of Air Bag Crash Sensor #2 Feed/Return Circuit Open, but there are several other possible causes as well, such as ;

Exhaust tube
Erratic camshaft position due to low oil pressure
EVAP canister or fuel tank leaks
Faulty ignition coil (s)

C3187 code for all cars

You can view according C3187 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C3187 De Soto Fireflite

+C3187 Daimler 4-litre

+C3187 Pierce-arrow 8

+C3187 Opel Caravan

+C3187 Cadillac Sixty

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