P0758 Fault Code in Honda: Causes, Symptoms, and Fixes

This code indicates a problem with the Shift Solenoid B, typically in an automatic transmission. The solenoid helps control fluid flow and gear shifting. An electrical fault (short/open circuit, poor connection, or internal solenoid failure) has been detected by the Transmission Control Module (TCM).

Common Causes:

1. Faulty Shift Solenoid B
2. Wiring Issues (damaged wires, open/short circuits)
3. Bad Transmission Fluid (dirty, low, or contaminated)
4. Faulty TCM (less common)
5. Poor electrical connections in the transmission harness

Possible Symptoms:

1. Harsh or delayed shifting
2. Transmission stuck in one gear (usually 2nd or limp mode)
3. Check Engine Light ON
4. Reduced fuel economy
5. Slipping or erratic gear changes

Fixes:

1. Check Transmission Fluid – Level and condition
2. Inspect Wiring and Connectors to the solenoids
3. Test the Solenoid with a multimeter (resistance check)
4. Replace Shift Solenoid B if faulty
5. Clear the Code and test drive after repair

Resistance Spec (Typical, may vary):

1. Solenoids usually read between 12–25 ohms
2. Always confirm with manufacturer specs for your vehicle model