P0974 Code - Shift Solenoid 'A' Control Circuit High
Quick Answer
The P0974 diagnostic trouble code (DTC) indicates a problem with the Shift Solenoid 'A' control circuit being too high. Common causes include Faulty shift solenoid 'A', Damaged wiring or connectors in the control circuit, Corrosion or poor connections in the circuit. 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
- P0974 indicates Shift Solenoid 'A' Control Circuit High.
- Common causes
- Common causes include Faulty shift solenoid 'A', Damaged wiring or connectors in the control circuit, Corrosion or poor connections in the circuit.
- 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.
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Code P0974 Description
The P0974 diagnostic trouble code (DTC) indicates a problem with the Shift Solenoid 'A' control circuit being too high. In an automatic transmission, the shift solenoid is responsible for regulating the flow of transmission fluid to engage or disengage specific gears. In this case, a high voltage in the control circuit suggests an issue with the solenoid not functioning properly, which can lead to difficulties in shifting gears.
Common Causes of P0974
- Faulty shift solenoid 'A'
- Damaged wiring or connectors in the control circuit
- Corrosion or poor connections in the circuit
- Issues with the transmission control module (TCM)
- Electrical problems such as short circuits or voltage spikes
Symptoms of P0974
- Harsh or delayed shifting
- Slipping gears
- Stuck in a particular gear
- Illuminated check engine light
- Reduced fuel efficiency
How to Fix P0974
- Begin by diagnosing the specific cause of the high voltage in the Shift Solenoid 'A' Control Circuit using a scan tool to identify the issue accurately.
- Inspect the wiring and connectors associated with the shift solenoid to check for any damage, corrosion, or poor connections. Repair or replace as necessary.
- Test the shift solenoid itself to determine if it is functioning correctly. Replace the solenoid if it is found to be faulty.
- Reset the fault codes and perform a test drive to ensure the issue has been resolved and the transmission is shifting properly.
- If the problem persists, further diagnostics may be needed to identify any underlying issues with the TCM or other related components.
Cost to Fix P0974
The cost of repairing a Shift Solenoid 'A' Control Circuit High issue can vary depending on the specific cause of the problem and the extent of the repairs needed. In general, the cost of replacing a shift solenoid can range from $150 to $400, including parts and labor. Additional costs may be incurred if wiring or connectors need to be repaired or if further diagnostics are required. It's advisable to consult with a qualified mechanic for a more accurate estimate based on your vehicle's make and model. Keep in mind that labor rates at auto repair shops can vary, so it's recommended to shop around for the best price.
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Code P0974 Information for Specific Makes
- P0974 Acura — Shift Solenoid Valve 'A' Open
- P0974 Buick — Shift Solenoid Valve 1 Control Circuit High Voltage
- P0974 Cadillac — Shift Solenoid Valve 1 Control Circuit High Voltage
- P0974 Chevrolet — Shift Solenoid Valve 1 Control Circuit High Voltage
- P0974 Dodge — Shift Solenoid 'A' Control Circuit High
- P0974 GMC — Shift Solenoid Valve 1 Control Circuit High Voltage
- P0974 Honda — Shift Solenoid Valve 'A' Open
- P0974 Lexus — Shift Solenoid 'A' Control Circuit High
- P0974 Pontiac — Shift Solenoid 'A' Open Or Short To Power
- P0974 Saturn — Shift Solenoid 'A' Open Or Short To Power
- P0974 Scion — Shift Solenoid 'A' Control Circuit High
- P0974 Toyota — Shift Solenoid 'A' Control Circuit High
Frequently Asked Questions about P0974 Code
No Frequently Asked Questions about P0974 Code found.
Discuss the causes and fixes for P0974 OBDII Code
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Replace the solenoid. Runs anywhere from 23~77$. U will need to pull the pan, drain all the transmission fluid replace the solenoid and fill with new transmission fluid. You will also need a transmission kit for filter, gasket etc. Its an easy diy if you know what you are doing. You will spend about $100 doing so. Taking it to a professional will run you triple the cost. Hope this helps
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