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 the sensor that helps the car know when it's in reverse or second gear. It's like when your toy car can't tell if it's going forward or backward.
The P179D code indicates an issue with the mechanical function of the sensor responsible for detecting the position of the shift rod in the transmission, specifically for the second and reverse gears.
The P179D code is set when the transmission control module (TCM) detects a mechanical malfunction in the shift rod 2/R sensor. This sensor is responsible for monitoring the position of the shift rod that controls the engagement of the second and reverse gears. A mechanical fault could indicate a misalignment, obstruction, or damage to the sensor or its associated components.
• Transmission not shifting into second or reverse
• Check engine light illuminated
• Unusual noises from the transmission
• Misaligned shift rod
• Faulty shift rod sensor
• Obstruction in the shift linkage
TCM: Transmission Control Module
OBD-II: On-Board Diagnostics II
• Perform a visual inspection of the shift rod and sensor.
• Check for any obstructions in the shift linkage.
• Test the sensor for proper operation using a multimeter.
• Realign the shift rod if misaligned.
• Replace the faulty shift rod sensor.
• Remove any obstructions in the shift linkage.
• Multimeter
• Wrench set
• OBD-II scanner
$150 - $400
Moderate
• Volkswagen Jetta
• Audi A4
• Skoda Octavia
• Regular transmission maintenance
• Avoid aggressive shifting
• Ensure proper lubrication of transmission components
Sensor Issue
• Avoid driving the vehicle if it won't shift properly.
• Consult a professional mechanic for accurate diagnosis.
Check with your vehicle manufacturer as transmission components may be covered under powertrain warranty.
This code has been reported in vehicles with manual and automatic transmissions, typically occurring in models with higher mileage.
Moderate – Addressing this issue promptly can prevent further transmission damage.
Driving with a faulty transmission can be dangerous and may lead to further mechanical issues.
• Vehicle at operating temperature
• Transmission in neutral or park
The shift rod sensor is typically located on the transmission housing, near the shift linkage.
Q: Can I drive with a P179D code?
A: It's not recommended to drive with this code, as it can lead to further transmission damage.
Q: How do I reset the check engine light after fixing the issue?
A: Use an OBD-II scanner to clear the code after repairs are completed.
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