P0758 Shift Solenoid B Electrical
What does P0758 mean?
P0758 — Shift Solenoid B Electrical. This is an OBD-II diagnostic trouble code a scanner retrieves when your vehicle's computer detects shift solenoid b electrical. The level of risk depends on how the vehicle is currently running and how long you've been driving with the light on.
Common causes of P0758
- Faulty shift solenoid B
- Open or shorted solenoid circuit
- Damaged internal transmission harness
- Poor connector contact at the solenoid pack
- TCM fault
How to fix P0758
- Test shift solenoid B resistance against specification
- Inspect the internal harness and connector
- Check supply voltage and control grounds from the TCM
- Replace the solenoid and harness seals if worn
- Replace the TCM only after the circuit is proven good