U1989 Engine Fault Code

Check Solution For U1989 OBD Code :

U1989 engine code seems a kind of network problem, we try to show one by one the meaning and the solution.
Brief explanation of the U1989 code and definition of U1989 is the bottom side.

U1989 Meaning :

u Network Code
Problem is climate control system, lighting, airbags, etc.
1 MFG - Manufacturer Specific
9 Fuel And Air Metering (Injector Circuit Malfunctions Only)
8 Exhaust Gas Recirculation System Valve 1
9 Kick-Down Switch Failed Short

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 U1989 ?

While fuel economy was increased, acceleration was seriously compromised, and the loss of engine vacuum led to a dangerous loss of braking assist when the U1989 code system was in four-cylinder mode. In addition to these issues, while the company proposed a hydraulically controlled system that could be switched from within the car, the version they implemented had to be manually changed in the engine compartment using hand tools.

U1989 Code Description:

Is the fuel pump sometimes not priming when you turn the key to ON(II)? Start by measuring the fuel pressure and checking whether you have bright white-bluish spark at all four plugs. The mechanical timing is also something that you should check, as we mentioned above. When you see U1989 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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