DTC P0122: Throttle Position (TP1) Sensor Circuit Low Input
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2005 Mercury Sable, 2005 Mercury Mountaineer, 2005 Mercury Monterey, 2005 Mercury Montego, and 2005 Mercury Mariner. However, it is still accessible from the selected car via links, so may be relevant.
P0122 - THROTTLE POSITION (TP1) SENSOR CIRCUIT LOW INPUT
| For Vehicles With Electronic Throttle Control (ETC) | |||
| Description: | The electronic throttle control (ETC) TP1 sensor was flagged as fault status by the powertrain control module (PCM) indicating a low voltage or open circuit. | ||
| Possible Causes: |
|
||
| Diagnostic Aids: | This fault exhibits a symptom of limited power. A TP1 PID (TP V PID) reading less than 3.42% (0.17 volt) in key on engine off (KOEO), continuous memory, or key on engine running (KOER) indicates a hard fault. | ||
| For All Others | |||
| Description: | The TP sensor circuit is monitored by the powertrain control module (PCM) for a high TP rotation angle (or voltage) input through the comprehensive component monitor (CCM). If during key on engine off (KOEO), or key on engine running (KOER) the TP rotation angle (or voltage) changes above the maximum calibrated limit, the test fails. | ||
| Possible Causes: |
|
||
| Diagnostic Aids: | This fault exhibits a symptom of limited power. A TP PID (TP V PID) reading less than 3.42% (0.17 volt) in key on engine off (KOEO), continuous memory or key on engine running (KOER) indicates a hard fault. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles With Electronic Throttle Control (ETC) | GO to DV: Throttle Body Assembly ETC STEP DV1. | ||
| All others | GO to DH: Throttle Position (TP) Sensor STEP DH12. | GO to DH: Throttle Position (TP) Sensor STEP DH12. | GO to DH: Throttle Position (TP) Sensor STEP DH11. |