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Home >> Ford >> 2006 >> Focus ZX5 SE, Standard >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid) >> DTC Diagnosis >> DTC P0122: Throttle/Pedal Position Sensor A Circuit Low

DTC P0122: Throttle/Pedal Position Sensor A Circuit Low

P0122 - THROTTLE/PEDAL POSITION SENSOR A CIRCUIT LOW

For Vehicles With Electronic Throttle Control (ETC) 
Description:  The electronic throttle control (ETC) throttle position (TP) sensor 1 circuit was flagged as a concern by the powertrain control module (PCM) indicating a low voltage or open circuit.
Possible Causes: 
  • Open ETC TP sensor harness
  • Short to ground in the ETC TP sensor harness
  • Damaged TP sensor
  • SIG RTN circuit open to the TP sensor
Diagnostic Aids:  This concern 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 or key ON, engine running indicates a concern is present.
For All Others 
Description:  The throttle position (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 or key ON, engine running the TP rotation angle (or voltage) changes above the maximum calibrated limit, the test fails.
Possible Causes: 
  • TP sensor not seated properly
  • TP circuit open to PCM
  • VREF open to TP sensor
  • TP circuit short to GND
  • Damaged TP sensor
Diagnostic Aids:  This concern 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 or key ON, engine running indicates a concern is present.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
Vehicles With Electronic Throttle Control (ETC) GO to Pinpoint Test DV .
All others GO to Pinpoint Test DH .