Search engine trouble codes.
Example: P0120
U1986 Chevrolet Suburban engine code seems a kind of network problem, we try to show one by one the meaning and the solution.
Brief explanation of the U1986 Chevrolet Suburban code and definition of U1986 Chevrolet Suburban is the bottom side.
| 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 |
| 6 | Cruise Control System - Vehicle Accel Too High |
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.
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How To Fix U1986 Chevrolet Suburban ?
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. |
The original multi-displacement system turned off opposite pairs of cylinders, allowing the engine to have three different configurations and displacements. U1986 code had an elaborate diagnostics procedure, including showing engine trouble codes on the air conditionning display. However, the system was troublesome, misunderstood by customers, and a rash of unpredictable failures led to the technology being quickly retired. When you see U1986 Chevrolet Suburban 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.
