AutoCodes – Generic – P1C9C

P1C9C Code - Gear Shift Position Sensor 2 Circuit Low

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: P1C9C indicates Gear Shift Position Sensor 2 Circuit Low.
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 1,301

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 P1C9C 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 P1C9C - Gear Shift Position Sensor 2 Circuit Low - AutoCodes.com — P1C9C Code - Gear Shift Position Sensor 2 Circuit Low

What does this mean?

What are the Possible Causes of the DTC P1C9C?

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 P1C9C?

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 P1C9C 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 P1C9C code?

Need more information on how to fix the P1C9C code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1C9C code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1C9C Chrysler — Gear Shift Position Sensor 2 Circuit Low
P1C9C Dodge — Gear Shift Position Sensor 2 Circuit Low
P1C9C Fiat — Gear Shift Position Sensor 2 Circuit Low
P1C9C Jeep — Gear Shift Position Sensor 2 Circuit Low

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 P1C9C Code

1. What are the common symptoms of OBDII code P1C9C (Gear Shift Position Sensor 2 Circuit Low)?

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

2. What causes the OBDII code P1C9C to trigger?

- The code P1C9C is typically triggered by a malfunction in the gear shift position sensor 2 circuit, indicating a low voltage signal.

3. How serious is the OBDII code P1C9C (Gear Shift Position Sensor 2 Circuit Low)?

- While the vehicle may still be drivable with this code, it is important to address the underlying issue promptly to prevent potential transmission damage.

4. Can a faulty gear shift position sensor cause other problems besides triggering the OBDII code P1C9C?

- Yes, a faulty gear shift position sensor can lead to erratic shifting behavior, incorrect gear selection, and even safety concerns if not addressed.

5. How can I diagnose the OBDII code P1C9C at home?

- You can start by checking the wiring and connections related to the gear shift position sensor 2, as well as performing a voltage test to determine if the sensor is functioning properly.

6. Is it safe to continue driving with the OBDII code P1C9C present?

- It is generally not recommended to drive with the OBDII code P1C9C present, as it can lead to further transmission problems and potential safety hazards.

7. What are some common repair tips for fixing the OBDII code P1C9C?

- Repairing or replacing the gear shift position sensor 2, checking and repairing any damaged wiring, and resetting the fault codes are common steps to resolve this issue.

8. Can a DIY enthusiast repair the OBDII code P1C9C, or is professional help recommended?

- Depending on your skill level and experience with automotive repairs, you may be able to address the code P1C9C yourself. However, professional help is recommended if you are unsure.

9. Are there any preventative measures to avoid the OBDII code P1C9C in the future?

- Regularly inspecting and maintaining the gear shift position sensor 2, as well as being mindful of any symptoms related to shifting problems, can help prevent the recurrence of this code.

10. How much does it typically cost to repair the OBDII code P1C9C (Gear Shift Position Sensor 2 Circuit Low)?

- The cost of repairing the OBDII code P1C9C can vary depending on the extent of the issue, labor rates, and whether you choose to do the repairs yourself or seek professional help.