U3120 Engine Fault Code

Check Solution For U3120 OBD Code :

U3120 engine code seems a kind of network problem, we try to show one by one the meaning and the solution. Brief explanation of the U3120 code and definition of U3120 is the bottom side.

U3120 Meaning :

u	Network Code Problem is climate control system, lighting, airbags, etc.
3	SAE - Generic
1	BBV Sensor Circuit Low Voltage
2	BBV Sensor Circuit Low Voltage
0	Park/Neutral Postion (PNP) Switch Circuit Engine Torque Signal Circuit

SAE - Generic codes, which have a '0' as their second digit to indicate they are common to all makes and models of vehicles. These are the codes that are required for basic emissions fault diagnosis.

How To Fix U3120 ?

Like the all engines, the car engine system employs specially developed hydraulic lifters (known as switching roller followers) for the U3120 code intake and exhaust valves. The lifters can be collapsed by disengaging an internal locking pin. The locking pin is disengaged using solenoids to alter oil pressure fed into the lifter.

U3120 Code Description:

The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate. When you see U3120 engine fault code on your engine code reader this description will help you.

U Codes

List of all Network codes.

Final Step: In the definitions listed below, there is a test drive recommended after you've completed any repairs to see if the condition is fixed. Before you take a test drive after a repair, always erase the U Code(s) first. This will turn the check engine light off and then you will know if the check engine light returns, you've got further diagnostics to complete.

BE CAREFUL !
This engine code information is presented for information purposes only. This is not intended as repair advice and we are not responsible for any actions you take on any vehicle.