Hi Robert, It would help us to know which vehicle as the codes very well may be vehicle specific.Ford seem to have codes of that numerical range, so I'm assuming your vehicle is made by Ford.
P1120 refers to the Air flow sensor. P1120 the throttle position sensor. 1220 Series Throttle Control Fault (probably related to the TPS) 1221 Refers to the high speed fuel pump relay having been activated. 1516 Intake manifold runner input error. Cannot find P1514 Hope this is helpful. I suggest sorting out the air flow sensor and the throttle position sensor to begin with and that may sort out the other defects. Very often one sensor giving an error reading will trigger others. Regards John
P1512 Throttle Position Sensor Idle Switch Sense Circuit
P1513 Throttle Position Sensor Idle Switch Sense Circuit
P1514 Park/Neutral Position Switch High Load Neutral/Drive
P1516 Gear Change Park/Neutral Malfunction
P1517 Engine Cranking Park/Neutral Malfunction
P1607 MIL Output Circuit
P1608 Automatic Transmission
P1609 Internal ECM Error
P1641 Fuel Pump Relay No. 1
P1646 Fuel Pump Relay No. 2
P1739 Automatic Transmission
P1775 Transmission Control Module MIL Circuit
P1776 Torque Reduction Request Signal
P1777 Torque Reduction Circuit
P1780 Automatic Transmission
P1781 Automatic Transmission
P1782 Automatic Transmission
P1783 Automatic Transmission
P1785 Automatic Transmission
P1790 Automatic Transmission
P1791 Automatic Transmission
P1792 Automatic Transmission
P1794 Automatic Transmission
P1796 Automatic Transmission
as you can no such code exists for a jaguar ,contact code reader manufacturer
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