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 controls how the gears change. Imagine if a toy car's remote control had a button that wasn't working right, making the car go too fast or too slow. That's kind of what's happening here, but with a real car's transmission.
The P170A code indicates an issue with the pressure control solenoid 'A', which is responsible for regulating hydraulic pressure in the transmission. This solenoid helps ensure smooth gear shifts.
The pressure control solenoid 'A' is monitored by the vehicle's computer to ensure it is functioning correctly. If the computer detects a shunt or short circuit within the solenoid's electrical circuit, it triggers the P170A code. This can affect the transmission's ability to shift gears smoothly, leading to potential drivability issues.
• Harsh or erratic shifting
• Transmission slipping
• Illuminated check engine light
• Faulty pressure control solenoid 'A'
• Wiring issues or poor electrical connections
• Transmission control module (TCM) malfunction
Solenoid: An electromechanical device that controls fluid flow in the transmission.
Transmission Control Module (TCM): A computer that manages the operation of the vehicle's transmission.
• Use an OBD-II scanner to confirm the P170A code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the pressure control solenoid 'A' for proper operation.
• Replace the faulty pressure control solenoid 'A'.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the transmission control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular transmission fluid changes
• Routine electrical system inspections
• Avoid aggressive driving habits
Transmission Control Issue
• Avoid driving the vehicle until repaired to prevent further damage.
• Consult a professional mechanic for accurate diagnostics.
Check with your vehicle manufacturer for powertrain warranty coverage, as this may cover transmission-related issues.
The P170A code has been associated with vehicles experiencing transmission issues due to solenoid failures or electrical problems. It is not uncommon in older vehicles with high mileage.
High – Transmission issues can lead to further damage if not addressed promptly.
Driving with transmission issues can be dangerous and may lead to accidents. Ensure repairs are made promptly to maintain vehicle safety.
• Vehicle at operating temperature
• Transmission in drive mode
The pressure control solenoid 'A' is located within the transmission assembly, typically accessible by removing the transmission pan.
Q: Can I drive with a P170A code?
A: It's not recommended to drive with this code active, as it can lead to further transmission damage.
Q: How long does it take to fix a P170A code?
A: Repair time can vary, but typically it takes a few hours to diagnose and fix the issue.
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