mercury Workshop Repair Guides

Mercury Workshop Manuals

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P0120 - P0124: Testing and Inspection
P0121

For diagnosis of code P0121 refer to chart

P0102 - P0180

If there is no link in the chart then:

-

This code is not a valid code for this vehicle

-

Or information published by the manufacturer for this vehicle did not include this code

-

For complete diagnosis of the Engine Control system, follow this link: See: Powertrain Management/Computers and Control Systems/Testing and
Inspection

A L L Diagnostic Trouble Codes ( DTC ) > Codes by Number > P0100-P01ZZ > P0120 - P0124, ( P0121 P0122 P0123 0120 0121 0122 0123 0124 ) > System Information > System Diagnosis > P0121

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