U1478 Engine Fault Code

Check Solution For U1478 OBD Code :

U1478 engine code seems a kind of network problem, we try to show one by one the meaning and the solution.
Brief explanation of the U1478 code and definition of U1478 is the bottom side.

U1478 Meaning :

u Network Code
Problem is climate control system, lighting, airbags, etc.
1 MFG - Manufacturer Specific
4 BBV Sensor Circuit Low Voltage
7 BBV Sensor Circuit Low Voltage
8 Transmission

MFG - Manufacturer Specific codes, which have a '1' as their second digit to indicate they are unique to a particular vehicle make or model. These special codes were deemed necessary by the vehicle manufacturers so they could provide additional diagnostic information beyond the basic list of generic OBD II codes for all kinds of faults, not just emissions-related faults.

How To Fix U1478 ?

Like the all engines, the car engine system employs specially developed hydraulic lifters (known as switching roller followers) for the U1478 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.

U1478 Code Description:

Regarding the U1478 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 U1478 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.

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