AutoCodes – Chrysler – P1C99 Chrysler

P1C99 Chrysler Code - Gear Shift Position Sensor 1 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 1, Gear Shift Position Sensor 1 harness is open or shorted, Gear Shift Position Sensor 1 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: P1C99 Chrysler indicates Gear Shift Position Sensor 1 Circuit.
Common causes: Common causes include Faulty Gear Shift Position Sensor 1, Gear Shift Position Sensor 1 harness is open or shorted, Gear Shift Position Sensor 1 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.

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Code Popularity 1,501

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
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Code P1C99 Chrysler 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 1st - 3rd 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 P1C99 Chrysler - Gear Shift Position Sensor 1 Circuit - AutoCodes.com — P1C99 Chrysler Code - Gear Shift Position Sensor 1 Circuit

What does this mean?

What are the Possible Causes of the DTC P1C99 Chrysler?

Faulty Gear Shift Position Sensor 1
Gear Shift Position Sensor 1 harness is open or shorted
Gear Shift Position Sensor 1 circuit poor electrical connection
Faulty Transmission Control Module (TCM)

How to Fix the DTC P1C99 Chrysler?

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 P1C99 Chrysler 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.

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Need Help with the Code?

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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 P1C99 Chrysler Code

1. What are common symptoms of OBDII code P1C99 in a Chrysler related to the Gear Shift Position Sensor 1 Circuit?

Symptoms may include difficulty shifting gears, inaccurate gear display on the dashboard, and the transmission being stuck in a single gear.

2. What could cause the OBDII code P1C99 to trigger in a Chrysler?

Potential causes include a faulty gear shift position sensor, damaged wiring or connectors in the sensor circuit, or a malfunction in the transmission control module.

3. How can I diagnose the issue causing OBDII code P1C99 in my Chrysler?

Diagnosis typically involves using a scan tool to read the code, checking the gear shift position sensor for proper operation, inspecting related wiring and connectors for damage, and testing the transmission control module.

4. Is it safe to continue driving my Chrysler with OBDII code P1C99 present?

It is not recommended to drive the vehicle with this code active, as it can lead to transmission issues, potential safety hazards, and further damage if left unaddressed.

5. Can I repair the Gear Shift Position Sensor 1 Circuit issue in my Chrysler at home?

Depending on your automotive repair skills, you may be able to replace the gear shift position sensor or repair damaged wiring at home. However, complex transmission or control module issues may require professional diagnosis and repair.

6. How much does it typically cost to fix OBDII code P1C99 related to the Gear Shift Position Sensor 1 Circuit in a Chrysler?

Costs can vary based on the specific cause of the issue, but repairs may range from $100-$500, including parts and labor.

7. Are there any preventive measures to avoid triggering OBDII code P1C99 in a Chrysler?

Regularly inspecting and maintaining the gear shift position sensor, checking for any signs of wear or damage, and addressing any transmission issues promptly can help prevent this code from appearing.

8. Can a low battery voltage cause OBDII code P1C99 to be logged in a Chrysler?

Yes, low battery voltage or electrical issues can sometimes trigger this code, so ensuring the vehicle's electrical system is in good condition is important.

9. Will resetting the OBDII code P1C99 in my Chrysler make the issue go away permanently?

Simply clearing the code without addressing the underlying problem will not resolve the issue permanently. It is crucial to diagnose and fix the root cause to prevent the code from reoccurring.

10. How long does it typically take to repair OBDII code P1C99 related to the Gear Shift Position Sensor 1 Circuit in a Chrysler?

The repair time can vary depending on the exact cause of the issue and the extent of the repair needed, but it may take anywhere from 1-4 hours at a repair shop.