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U1242 Mercury Grand engine code seems a kind of network problem, we try to show one by one the meaning and the solution.
Brief explanation of the U1242 Mercury Grand code and definition of U1242 Mercury Grand is the bottom side.
Problem is climate control system, lighting, airbags, etc.
|1||MFG - Manufacturer Specific|
|2||Accelerator Pedal Position (APP) Sensor 1 Performance|
|4||BBV Sensor Circuit Low Voltage|
|2||A/C System High Pressure High Temperature|
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.
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.
There are currently two main types of cylinder deactivation used today, depending on the type of engine. U1242 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. When you see U1242 Mercury Grand 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.
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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.