P0866 Aston Martin Le Mans OBD Code

OBD/2 P0866 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.

As long as the throttle plate remains closed, the idling speed and quality is controlled by the PCM via the idle control valve, and as can be seen from the above it should be clear that idle control on a gasoline engine is a complex affair. For instance, if the engine is started in sub-zero temperatures, the PCM will command the idling control valve to allow less air to enter the engine to enrich the air/fuel mixture to create a condition which is roughly analogous to how chokes worked on carburetted engines to control idling in cold weather.

P0866 Aston Martin Le Mans Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine P0866 light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If p0866 tcm communication circuit high so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the p0866 tcm communication circuit high.

Common Causes of Aston Martin Le Mans P0866 OBD2 Code

A common cause of code P0866 is the failure of P0866 TCM Communication Circuit High, but there are several other possible causes as well, such as ;

Exhaust tube
1Camshaft Position Sensor circuit poor electrical connection
Faulty front heated oxygen sensor
Open circuits caused by damage to wiring.

P0866 is a kind of Powertrain Trouble Code

Powertrain of a modern automobile, comprising engine (with exhaust system), transmission, drive shaft, suspension and the wheels. In a motor vehicle, the term powertrain or powerplant describes the main components that generate power and deliver it to the road surface, water, or air.

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

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P0866 Aston Martin Le Mans OBD Code

P0866 Aston Martin Le Mans Error Code Repair Process :

Common Causes of Aston Martin Le Mans P0866 OBD2 Code

P0866 code for other Aston cars