AutoCodes – Generic – P1C9D

P1C9D Code - Gear Shift Position Sensor 2 Circuit

Quick Answer

This diagnostic compares the output signal of the sensor to threshold values of normal operations. Common causes include Faulty Gear Shift Position Sensor 2, Gear Shift Position Sensor 2 harness is open or shorted, Gear Shift Position Sensor 2 circuit poor electrical connection. 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: P1C9D indicates Gear Shift Position Sensor 2 Circuit.
Common causes: Common causes include Faulty Gear Shift Position Sensor 2, Gear Shift Position Sensor 2 harness is open or shorted, Gear Shift Position Sensor 2 circuit poor electrical connection.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 2,802

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 12, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1C9D Description

This diagnostic compares the output signal of the sensor to threshold values of normal operations. When the signal is out of range the diagnostic will be considered failing. The sensor is mounted next to the 2nd - 4th gear engagement actuator to detect a linear movement of the piston. For this purpose a permanent magnet is mounted on the piston which is moved over a complete travel stroke. The magnet position generates a saturation area in the internal ferromagnetic core of the sensor which is transformed to an output position signal. The sensor provides an output signal with Pulse Width Modulation (PWM) at a fixed frequency and duty cycle proportional to the piston position of the actuator.

OBDII Code P1C9D - Gear Shift Position Sensor 2 Circuit - AutoCodes.com — P1C9D Code - Gear Shift Position Sensor 2 Circuit

What does this mean?

What are the Possible Causes of the DTC P1C9D?

Faulty Gear Shift Position Sensor 2
Gear Shift Position Sensor 2 harness is open or shorted
Gear Shift Position Sensor 2 circuit poor electrical connection
Faulty Transmission Control Module (TCM)

How to Fix the DTC P1C9D?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1C9D code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1C9D code?

Need more information on how to fix the P1C9D code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1C9D code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1C9D Chrysler — Gear Shift Position Sensor 2 Circuit
P1C9D Dodge — Gear Shift Position Sensor 2 Circuit
P1C9D Fiat — Gear Shift Position Sensor 2 Circuit
P1C9D Jeep — Gear Shift Position Sensor 2 Circuit

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1C9D Code

1. What are the common symptoms of OBDII code P1C9D (Gear Shift Position Sensor 2 Circuit)?

- Common symptoms include difficulty shifting gears, inaccurate gear display on the dashboard, and potential transmission issues.

2. What are the possible causes of OBDII code P1C9D?

- The code P1C9D can be triggered by a faulty gear shift position sensor 2, damaged wiring or connectors associated with the sensor, or a malfunction in the transmission control module.

3. How can I diagnose the OBDII code P1C9D related to the Gear Shift Position Sensor 2 Circuit?

- Diagnosis involves using an OBDII scanner to retrieve the specific fault code, inspecting the gear shift position sensor 2 and its wiring for any visible damage, and conducting a thorough system check of the transmission components.

4. Can a DIY enthusiast repair OBDII code P1C9D at home?

- While some basic troubleshooting steps like checking connections and sensor integrity can be done at home, repairing or replacing the gear shift position sensor 2 or related components may require professional assistance due to the complexity of transmission systems.

5. What are the potential risks of ignoring OBDII code P1C9D?

- Ignoring the P1C9D code can lead to further transmission damage, incorrect gear selection, and unsafe driving conditions, potentially resulting in more costly repairs in the long run.

6. Is it safe to drive with OBDII code P1C9D active?

- It is not recommended to drive with the P1C9D code active, as it can cause unpredictable gear shifting behavior and compromise the overall safety and performance of the vehicle.

7. How much does it typically cost to repair OBDII code P1C9D related to the Gear Shift Position Sensor 2 Circuit?

- The cost of repairs can vary depending on the exact cause of the issue, but it may range from $200 to $500 for sensor replacement and up to $1000 for more extensive repairs involving the transmission control module.

8. Can extreme weather conditions affect the Gear Shift Position Sensor 2 Circuit and trigger OBDII code P1C9D?

- Yes, extreme temperatures or moisture exposure can potentially damage the sensor or its wiring, leading to a malfunction and the triggering of the P1C9D fault code.

9. Are there any preventive maintenance tips to avoid OBDII code P1C9D related to the Gear Shift Position Sensor 2 Circuit?

- Regularly inspecting and maintaining the transmission system, ensuring proper fluid levels and quality, and addressing any unusual shifting behavior promptly can help prevent issues that may trigger the P1C9D fault code.

10. How long does it typically take to repair OBDII code P1C9D once diagnosed?

- The repair time can vary depending on the extent of the issue and the availability of parts, but it may take anywhere from a few hours to a full day for a qualified technician to address the Gear Shift Position Sensor 2 Circuit problem.