P1740

P1740 - TCC OR O/D SOLENOID PERFORMANCE

ALLDATA Editor's Note: Please note that there is a TSB regarding code P1740 for this vehicle. Refer to TSB #21-11-00 for more information.

Test 1:

Tests 2 - 4:

Tests 5 - 8:

Tests 9 - 13:

Tests 14 - 16:

SYMPTOM
P1740 - TCC OR O/D SOLENOID PERFORMANCE

WHEN MONITORED
The Torque Converter Clutch (TCC) and Overdrive Clutch (O/D) will be tested each time the PCM requests TCC engagement in 3rd gear and O/D.

SET CONDITION
The DTC will set if the expected engine rpm to output shaft speed rpm ratio is not achieved during TCC and/or O/D engagement. This indicates malfunctioning torque converter or overdrive clutch.

POSSIBLE CAUSES
- Torque converter
- Cooler flow restricted
- Oil pump/shaft
- Transmission fluid level and condition
- Intermittent problem
- Intermittent 3-4 solenoid
- Internal transmission problem - O/D clutch/seals or valve body contamination
- Oil burnt or oil pan has excessive debris
- Intermittent torque converter clutch solenoid
- Internal problem or TCC solenoid