Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with a part in the car that helps control the pressure of the transmission fluid. It's like a little valve that isn't working right.
The P173C code indicates an issue with the pressure control solenoid 'G', which is responsible for regulating hydraulic pressure in the transmission.
The pressure control solenoid 'G' is a component in the transmission that helps manage the flow and pressure of transmission fluid. This code is triggered when the transmission control module (TCM) detects an abnormal signal or performance from this solenoid, indicating that it may be shunted or shorted.
• Harsh or erratic shifting
• Transmission slipping
• Illuminated check engine light
• Faulty pressure control solenoid 'G'
• Wiring issues or poor connections
• Transmission control module (TCM) malfunction
Solenoid: An electromechanical device used to control fluid flow in the transmission.
TCM: Transmission Control Module, a computer that manages transmission operations.
• Check for other related codes
• Inspect wiring and connectors for damage
• Test the pressure control solenoid 'G' for proper operation
• Replace the faulty pressure control solenoid 'G'
• Repair or replace damaged wiring or connectors
• Reprogram or replace the transmission control module (TCM) if necessary
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• Ford Focus
• Volkswagen Jetta
• Chevrolet Malibu
• Regular transmission fluid changes
• Routine inspection of transmission components
• Prompt repair of any transmission issues
Transmission Performance Issue
• Avoid driving at high speeds until the issue is resolved
• Get the vehicle inspected by a professional mechanic
Check with your vehicle manufacturer, as transmission components might be covered under a powertrain warranty.
This code has been associated with vehicles that experience frequent transmission issues due to solenoid failures.
Moderate – It is advisable to address this issue soon to prevent further transmission damage.
Driving with a malfunctioning transmission can be dangerous and may lead to further damage. Address the issue promptly.
• Vehicle at operating temperature
• Transmission engaged in drive
The pressure control solenoid 'G' is located inside the transmission, often accessible by removing the transmission pan.
Q: Can I drive with a P173C code?
A: It's not recommended to drive for long periods with this code active, as it can lead to further transmission damage.
Q: How can I prevent this code from appearing?
A: Regular maintenance and timely repairs of transmission components can help prevent this code.
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