Search engine trouble codes.
Example: P0120
U3401 engine code seems a kind of network problem, we try to show one by one the meaning and the solution.
Brief explanation of the U3401 code and definition of U3401 is the bottom side.
| u |
Network Code Problem is climate control system, lighting, airbags, etc. |
| 3 | SAE - Generic |
| 4 | Transmission |
| 0 | IC Circuit High Voltage |
| 1 | TFP Valve Position Switch-Drive Without Drive Ratio |
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.
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How To Fix U3401 ?
There are currently two main types of cylinder deactivation used today, depending on the type of engine. U3401 code for the pushrod design which uses solenoids to alter the oil pressure delivered to the lifters. In their collapsed state, the lifters are unable to elevate their companion pushrods under the valve rocker arms, resulting in valves that cannot be actuated and remain closed. |
Regarding the U3401 code, it would probably be worthwhile to carefully inspect the wire harness near the intake manifold bracket. This is done most easily from below the car in the area near the oil filter. When you see U3401 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.
