Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer found a problem with one of the parts that helps control the pressure in the transmission. It's like a sensor that checks if everything is working right, and it noticed something isn't quite right.
The P170D code is triggered when the transmission control module (TCM) detects an issue with the pressure control solenoid 'D', specifically related to its shunt monitoring circuit.
The pressure control solenoid 'D' is responsible for regulating hydraulic pressure in the transmission. The TCM monitors the solenoid's operation and its electrical circuit. If it detects a fault in the shunt monitoring circuit, it triggers the P170D code. This could be due to electrical issues, mechanical failure of the solenoid, or other related problems.
• Transmission slipping
• Harsh or erratic shifting
• Check Engine Light illuminated
• Faulty pressure control solenoid 'D'
• Wiring issues or poor electrical connections
• Malfunctioning transmission control module (TCM)
Solenoid: An electromechanical device that controls fluid flow.
TCM: Transmission Control Module, a computer that manages transmission functions.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the solenoid.
• Test the solenoid for proper operation and resistance.
• Replace the faulty pressure control solenoid.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the TCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Vehicle 1
• Vehicle 2
• Vehicle 3
• Regular transmission maintenance
• Ensure proper electrical connections
• Avoid harsh driving conditions
Transmission Control
• Have the vehicle inspected by a professional.
• Avoid driving under heavy load until repaired.
Check vehicle warranty for coverage on transmission components.
This code has been associated with vehicles experiencing electrical issues in the transmission system.
Moderate – Should be addressed soon to prevent further transmission damage.
Ignoring transmission issues can lead to unsafe driving conditions.
• Vehicle at operating temperature
• Transmission in gear
The pressure control solenoid 'D' is located within the transmission valve body.
Q: Can I drive with a P170D code?
A: It's not recommended as it may lead to further damage or unsafe driving conditions.
Q: How is the P170D code diagnosed?
A: A mechanic will use an OBD-II scanner, inspect wiring, and test the solenoid.
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