P0977 Scion Code - Shift Solenoid 'B' Control Circuit High
Quick Answer
The Engine Control Module (ECM) commands gear shifts by turning the shift solenoid valves "ON/OFF". Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty shift solenoid 'B' valve. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0977 Scion indicates Shift Solenoid 'B' Control Circuit High.
- Common causes
- Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty shift solenoid 'B' valve.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0977 Scion Description
What are the Possible Causes of the DTC P0977 Scion?
- Low transmission fluid level
- Dirty transmission fluid
- Faulty shift solenoid 'B' valve
- Shift solenoid 'B' valve harness or connectors
- Shift solenoid 'B' valve circuit is open or shorted
How to Fix the DTC P0977 Scion?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0977 Scion code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0977 Scion Code
What does OBDII code P0977 mean for a Scion?
Code P0977 indicates a high voltage issue in the Shift Solenoid 'B' Control Circuit, which helps manage gear shifting in the vehicle's transmission.
What are the common symptoms of code P0977 in a Scion?
Symptoms may include harsh or delayed gear shifting, transmission slipping, reduced fuel efficiency, or the Check Engine Light turning on.
What causes code P0977 for the Shift Solenoid 'B' Control Circuit?
Common causes include damaged wiring or connectors in the solenoid circuit, a defective shift solenoid, or issues with the transmission control module (TCM).
Can driving with code P0977 damage my Scion’s transmission?
Yes, ignoring this code can lead to further transmission damage due to improper gear shifting and increased wear on components.
How do I diagnose code P0977 in a Scion?
Start by inspecting the wiring and connectors for damage or corrosion, then test the shift solenoid 'B' for proper operation using a multimeter.
How do I fix code P0977 in a Scion?
Repairs may include replacing damaged wiring, connectors, or the shift solenoid itself. In some cases, the TCM may need to be repaired or reprogrammed.
How much does it cost to fix code P0977 in a Scion?
Repair costs vary but typically range from $200 to $500, depending on whether wiring repairs, solenoid replacement, or TCM service is required.
Can a dirty transmission fluid cause code P0977?
Yes, dirty or contaminated transmission fluid can negatively affect solenoid operation and may contribute to this code.
Do I need special tools to fix code P0977 in a Scion?
Basic tools like a multimeter and an OBDII scanner can help diagnose this code, but advanced repairs may require transmission-specific tools.
Should I reset the Check Engine Light after fixing code P0977?
Yes, after completing repairs, use an OBDII scanner to clear the code and verify that the issue is resolved.
Discuss the causes and fixes for P0977 Scion OBDII Code
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