Your Volvo V90 engine control system detects a problem, the computer stores the diagnostic trouble
code U1672 in its memory.
To figure out what is wrong with your vehicle you must first extract the U1672 DTC For Volvo V90.
U1672 Volvo V90 engine diagnostic code is about in terms of how often you should get your tyres rotated, it's different for every vehicle and type of tyre, but having them rotated at every oil change is a good rule of thumb. Check with the tyre manufacturer for a more specific time frame. Remember that the more often you rotate your tyres, the more evenly they'll wear, and when you have the tyres rotated, you should also get them checked for balance and alignment.
U1672 Volvo V90 DTC Meaning
Network Code - Problem is climate control system, lighting, airbags, etc.
MFG - Manufacturer Specific
Vehicle Speed Control And Idle Control System
Exhaust Gas Recirculation System Valve 1
Kick-Down Switch Failed Short
If your vehicle failed a U1672 Volvo V90 test and the U1672 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 U1672 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 U1672 DTC For Volvo V90: Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression.