P1794

Symptom:
P1794-SPEED SENSOR GROUND ERROR

When Monitored:
The transmission gear ratio is monitored continuously while the transmission is in gear.

Set Condition:
After a PCM reset in neutral and Input/Output Ratio equals a ratio of 2.50 to 1.0 ± 50.0 RPM.

Test 1:

Test 2-5:

POSSIBLE CAUSES
- SPEED SENSOR GROUND CIRCUIT OPEN
- POWERTRAIN CONTROL MODULE
- INTERMITTENT WIRING AND CONNECTORS