AutoCodes – Generic – P1CA4

P1CA4 Code - Gear Shift Position Sensor 4 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 4, Gear Shift Position Sensor 4 harness is open or shorted, Gear Shift Position Sensor 4 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: P1CA4 indicates Gear Shift Position Sensor 4 Circuit Low.
Common causes: Common causes include Faulty Gear Shift Position Sensor 4, Gear Shift Position Sensor 4 harness is open or shorted, Gear Shift Position Sensor 4 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 1,387

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 P1CA4 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 6th 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 P1CA4 - Gear Shift Position Sensor 4 Circuit Low - AutoCodes.com — P1CA4 Code - Gear Shift Position Sensor 4 Circuit Low

What does this mean?

What are the Possible Causes of the DTC P1CA4?

Faulty Gear Shift Position Sensor 4
Gear Shift Position Sensor 4 harness is open or shorted
Gear Shift Position Sensor 4 circuit poor electrical connection
Faulty Transmission Control Module (TCM)

How to Fix the DTC P1CA4?

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 P1CA4 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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Information for Specific Makes

P1CA4 Chrysler — Gear Shift Position Sensor 4 Circuit Low
P1CA4 Dodge — Gear Shift Position Sensor 4 Circuit Low
P1CA4 Fiat — Gear Shift Position Sensor 4 Circuit Low
P1CA4 Jeep — Gear Shift Position Sensor 4 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 P1CA4 Code

1. What are common symptoms of OBDII code P1CA4 (Gear Shift Position Sensor 4 Circuit Low)?

The common symptoms of code P1CA4 include difficulty shifting gears, inaccurate gear display on the dashboard, and potential stalling of the vehicle.

2. What can cause OBDII code P1CA4 to trigger?

Code P1CA4 is typically triggered by a malfunction in the gear shift position sensor 4 circuit, which may be caused by wiring issues, sensor damage, or faulty connections.

3. How serious is OBDII code P1CA4 (Gear Shift Position Sensor 4 Circuit Low)?

While the severity may vary, it is important to address code P1CA4 promptly to prevent potential safety hazards, transmission issues, or further damage to the vehicle.

4. How is OBDII code P1CA4 diagnosed?

Diagnosing code P1CA4 involves using an OBDII scanner to retrieve the trouble code, performing a visual inspection of the gear shift position sensor and related wiring, and conducting further testing to pinpoint the exact cause.

5. Can I drive with OBDII code P1CA4?

It is not recommended to drive with code P1CA4 present, as it can lead to transmission problems, inaccurate gear shifting, and potential safety risks. It is advised to address the issue promptly.

6. How can I repair OBDII code P1CA4 (Gear Shift Position Sensor 4 Circuit Low)?

Repairing code P1CA4 may involve replacing the gear shift position sensor 4, repairing or replacing damaged wiring, checking and cleaning sensor connections, and clearing the trouble code with an OBDII scanner.

7. Can a DIY enthusiast fix OBDII code P1CA4?

While some DIY enthusiasts may have the skills to address code P1CA4, it is recommended to consult a professional mechanic for accurate diagnosis and proper repair to ensure the issue is resolved correctly.

8. How much does it cost to fix OBDII code P1CA4?

The cost of repairing code P1CA4 can vary depending on the extent of the damage, the price of replacement parts, and labor charges. It is advisable to obtain quotes from different mechanics for an accurate estimate.

9. Are there any preventive measures to avoid OBDII code P1CA4?

To help prevent code P1CA4, it is important to regularly check the condition of the gear shift position sensors, perform routine maintenance on the transmission system, and address any issues promptly to avoid further damage.

10. What should I do if OBDII code P1CA4 keeps coming back after repair?

If code P1CA4 keeps reoccurring after repair, it is advisable to have the vehicle rechecked by a professional mechanic to ensure the root cause of the issue is properly identified and addressed.