Chrysler 37 Part Throttle Unlock Solenoid Circuit

How to read it

Code 37 reads as 3 flashes, pause, 7 flashes on the check-engine light. Cycle the ignition key on, off, on, off, then leave it on with the engine off, and count the flashes on the power loss or check-engine light.

What does Chrysler code 37 mean?

Part Throttle Unlock Solenoid Circuit

Common causes of 37

• Failed part throttle unlock or torque converter solenoid
• Open or shorted solenoid wiring in the trans harness
• Valve body fault blocking the unlock signal
• Faulty solenoid driver in the controller
• On some models a barometric read solenoid fault sets this same code

How to fix 37

1. Check trans fluid level and condition first
2. Inspect the trans connector and harness for damage and fluid intrusion
3. Test the part throttle unlock solenoid resistance per the manual
4. Test the barometric read solenoid on models that share this code
5. Repair the external wiring before opening the transmission
6. Clear the code and road test to confirm converter lockup

Source

Qualified source review