P0973 Toyota Code - Shift Solenoid 'A' Control Circuit Low
Quick Answer
The Engine Control Module (ECM) commands gear shifts by turning the shift solenoid valves "ON/OFF". Common causes include Faulty Shift Solenoid 'A', Shift Solenoid 'A' harness is open or shorted, Shift Solenoid 'A' electrical circuit poor electrical connection. 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
- P0973 Toyota indicates Shift Solenoid 'A' Control Circuit Low.
- Common causes
- Common causes include Faulty Shift Solenoid 'A', Shift Solenoid 'A' harness is open or shorted, Shift Solenoid 'A' electrical circuit poor electrical connection.
- 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 P0973 Toyota Description
What are the Possible Causes of the DTC P0973 Toyota?
- Faulty Shift Solenoid 'A'
- Shift Solenoid 'A' harness is open or shorted
- Shift Solenoid 'A' electrical circuit poor electrical connection
How to Fix the DTC P0973 Toyota?
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 P0973 Toyota 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 P0973 Toyota Code
1. What does the OBDII code P0973 mean on a Toyota?
P0973 indicates a "Shift Solenoid 'A' Control Circuit Low" issue, meaning the transmission control module (TCM) has detected a low voltage problem in the shift solenoid 'A' circuit.
2. What are the common symptoms of the P0973 code on a Toyota?
Symptoms may include harsh or delayed shifting, inability to shift gears, transmission stuck in one gear, or the check engine light turning on.
3. What causes the P0973 code on a Toyota?
Common causes include a faulty shift solenoid 'A', damaged wiring or connectors in the circuit, low transmission fluid, or a malfunctioning transmission control module (TCM).
4. Can low transmission fluid cause the P0973 code?
Yes, low or contaminated transmission fluid can lead to poor solenoid performance and trigger the P0973 code.
5. How do you diagnose the P0973 code on a Toyota?
Diagnosis involves checking the transmission fluid level, inspecting the wiring and connectors for damage, testing the shift solenoid 'A' for proper resistance, and verifying the TCM operation.
6. How do you fix the P0973 code on a Toyota?
Repairs may include replacing the shift solenoid 'A', repairing or replacing damaged wiring, cleaning or securing electrical connectors, refilling or replacing transmission fluid, or reprogramming the TCM if needed.
7. Is it safe to drive with the P0973 code on a Toyota?
Driving with the P0973 code can lead to transmission damage or unsafe driving conditions due to improper shifting, so it’s best to address the issue promptly.
8. What tools are needed to troubleshoot the P0973 code on a Toyota?
You’ll need an OBDII scanner, a multimeter for electrical testing, and potentially a transmission pressure gauge or service manual for detailed specifications.
9. How much does it cost to fix the P0973 code on a Toyota?
Depending on the cause, repairs can range from $100 to $400 for solenoid or wiring repairs. If the TCM needs replacement, costs can be significantly higher.
10. Can a P0973 code clear itself on a Toyota?
The code may temporarily clear if the issue is intermittent, but it will likely return until the underlying problem is resolved.
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