Transmission Gear Shift Control (Speed Sensors)

Symptom Chart
Condition(s)
DTC P1722 Stall speed:
Possible Source(s):
- Output speed sensor signal faulty
- Harness fault
- Connector pins(s) bent, loose or corroded
- Transmission Control Module (TCM) failure.
- Transmission mechanical fault.
Action(s) to take:
- GO to [Pinpoint Test G] Pinpoint Test G (P1722)

DTC P1726 Engine overspeed malfunction:
Possible Source(s):
- Transmission mechanical fault
Action(s) to take:
- GO to [Pinpoint Test H] Pinpoint Test H (P1726)

DTC P1730 Gear control malfunction 2,3,5,
Possible Source(s):
- Input speed sensor signal faulty
- Output speed sensor signal faulty
- Harness fault
- Connector pins(s) bent, loose or corroded
- TCM failure
- Transmission mechanical fault
Action(s) to take:
- GO to [Pinpoint Test I] Pinpoint Test I (P1730, P1734, P1779)

DTC P1734 Gear control malfunction 4:
Possible Source(s):
- Input speed sensor signal faulty
- Output speed sensor signal faulty
- Harness fault
- Connector pins(s) bent, loose or corroded
- TCM failure
- Transmission mechanical fault
Action(s) to take:
- GO to [Pinpoint Test I] Pinpoint Test I (P1730, P1734, P1779)

DTC P1779 Load control malfunction:
Possible Source(s):
- Input speed sensor signal faulty
- Output speed sensor signal faulty
- Harness fault
- Connector pins(s) bent, loose or corroded
- TCM failure
- Transmission mechanical fault
Action(s) to take:
- GO to [Pinpoint Test I] Pinpoint Test I (P1730, P1734, P1779)