P0976 code indicates a problem with the shift solenoid “B” control circuit, specifically a low voltage issue.
P0976 Shift Solenoid “B” Control Circuit Low
Code symptoms P0976.
4 symptoms of the code P0976 Shift Solenoid “B” Control Circuit Low are:
– Transmission slipping or delayed engagement
– Erratic shifting or inability to shift gears
– Poor fuel efficiency
– Illumination of the check engine light
Causes of the code P0976.
1. Malfunctioning shift solenoid “B”: The shift solenoid itself may be faulty or stuck in the low position, causing the control circuit to register a low voltage.
2. Wiring issues: A short circuit or open circuit in the wiring connected to the shift solenoid “B” can cause a low voltage reading in the control circuit.
3. Faulty transmission control module (TCM): A malfunctioning TCM, which controls the operation of the shift solenoids, can lead to issues with the solenoid circuit and trigger the P0976 code.
4. Grounding problems: Poor grounding of the shift solenoid “B” or TCM can result in low voltage being detected in the control circuit.
5. Connectors or terminal corrosion: Corrosion or poor connections at the connectors or terminals related to the shift solenoid “B” can cause resistance in the circuit, leading to a low voltage condition and triggering the DTC P0976.
Code Solutions P0976.
1. Check the wiring connections to the shift solenoid “B” for any loose connections or damage. Repair or replace as necessary.
2. Test the shift solenoid “B” using a multimeter to check for proper resistance values. Replace the solenoid if it is out of specification.
3. Inspect the transmission control module (TCM) for any signs of damage or corrosion. Clean or replace the TCM as needed.
4. Perform a diagnostic scan with a professional scanning tool to check for any trouble codes related to the shift solenoid “B” circuit low. Clear the codes and test drive the vehicle to see if the issue reoccurs.
5. Reset the vehicle’s computer by disconnecting the battery for a few minutes and then reconnecting it. This can sometimes reset the system and fix the issue with the shift solenoid “B” control circuit low.