U3473 Volvo 262 OBD Code

OBD/2 U3473 error code description and symptoms.

Engine Coolant Temperature (ECT) Circuit High Input Indicates the sensor signal is greater than Self-Test maximum. The ECT sensor maximum is 4.6 volts or -50 C (-58 F). Note on some vehicles that are not equipped with an ECT sensor, CHT can be used and can set this DTC. Open circuit in harness Sensor signal short to power Damaged PCM Improper harness connection Damaged sensor ECT V PID reading greater than 4.6 volts with key ON and engine OFF or during any engine operating mode indicates a hard fault.

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.

U3473 Volvo 262 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine U3473 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 boost calibration fault 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 boost calibration fault.

Common Causes of Volvo 262 U3473 OBD2 Code

A common cause of code U3473 is the failure of Boost Calibration Fault, but there are several other possible causes as well, such as ;

Engine Control Module (ECM)
Faulty Air Flow Meter
Faulty spark plug (s)
Open circuits caused by damage to wiring.

U3473 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.

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

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U3473 Volvo 262 OBD Code

U3473 Volvo 262 Error Code Repair Process :

Common Causes of Volvo 262 U3473 OBD2 Code

U3473 code for other Volvo cars