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DTC P1121 & P1122: Throttle Position (TP) Sensor

WARNING: This page is about a different car, the 2000 Honda Civic. However, it is still accessible from the selected car via links, so may be relevant.
  1. If DTC P1121 is indicated, turn ignition on. Using scan tool, check throttle position with throttle valve fully open. See THROTTLE POSITION PERCENTAGE  table. If TP percentage is as specified or more, problem is intermittent. System is functioning properly at this time. If TP percentage is less than specified, replace TP sensor.
  2. If DTC P1122 is indicated, turn ignition on. Using scan tool, check throttle position with throttle valve fully closed. See THROTTLE POSITION PERCENTAGE  table. If TP percentage is as specified or less, problem is intermittent. System is functioning properly at this time. If TP percentage is more than specified, replace TP sensor.
THROTTLE POSITION PERCENTAGE

Application (1) Percent Open (2) Percent Closed
D16Y5 11.8 16.5
D16Y7 12.9 16.9
D16Y8 12.2 16.5
B16A2 13.7 16.5
(1) DTC P1121.
(2) DTC P1122.
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