U3850 Armstrong Siddeley Star Sapphire OBD Code

OBD/2 U3850 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.

One example of this would be when an automatic vehicle in placed in gear. To prevent the added drag from the torque converter and transmission from reducing the idling speed, the PCM will command the idle control valve to allow more air to enter the engine, while at the same time, adjusting the injector pulse width to inject more fuel to suit the increased amount of air. Note that the idle air control valve is closed by the PCM when the throttle plate is opened to prevent excess air from entering the engine.

U3850 Armstrong Siddeley Star Sapphire Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine U3850 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 coolant temperature circuit malfunction 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 coolant temperature circuit malfunction.

Difficulty Level (Expert)

Repair Time (35 Min.)

Cost Prediction : $ 30-110

Common Causes of Armstrong Siddeley Star Sapphire U3850 OBD2 Code

A common cause of code U3850 is the failure of Coolant Temperature Circuit Malfunction, but there are several other possible causes as well, such as ;

• Exhaust tube
• Damaged ECM
• Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
• Oil flow restriction in the oil passages or the VCT valve body

U3850 is a kind of Network Trouble Code U-code indicates that engine communication errors and shows lost communication with engine parts.U-Codes are fairly straight forward, given all of the articles and technical publications that have been written regarding these problematic codes. In most cases, it just comes down to identifying the module that isn't communicating with the other modules on the CAN bus line for whatever reason.

U3850 code for other Armstrong cars

You can view according U3850 DTC for your car model. We selected several models to see obd2 solutions click and view it.

• U3850 Armstrong Siddeley 14
• U3850 Armstrong Siddeley 16
• U3850 Armstrong Siddeley 17
• U3850 Armstrong Siddeley 18
• U3850 Armstrong Siddeley 20
• U3850 Armstrong Siddeley 25
• U3850 Armstrong Siddeley 30
• U3850 Armstrong Siddeley Hurricane
• U3850 Armstrong Siddeley Sapphire
• U3850 Armstrong Siddeley Special
• U3850 Armstrong Siddeley Whitley

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

About Us | Contact | Privacy

Copyright 2017 © All rights reserved