AutoCodes – Dodge – B1291 Dodge

B1291 Dodge Code - Park Assist Sensor 4

Quick Answer

The Park Assist Sensors (PTS) are ultrasonic transceivers that are completely controlled by the Park Assist Module. Common causes include Faulty Park Assist Sensor 4, Park Assist Sensor 4 harness is open or shorted, Park Assist Sensor 4 circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: B1291 Dodge indicates Park Assist Sensor 4.
Common causes: Common causes include Faulty Park Assist Sensor 4, Park Assist Sensor 4 harness is open or shorted, Park Assist Sensor 4 circuit poor electrical connection.
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

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Code Popularity 3,711

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 29, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B1291 Dodge Description

The Park Assist Sensors (PTS) are ultrasonic transceivers that are completely controlled by the Park Assist Module. The sensors transmit and receive ultrasonic signals. Each sensor has a voltage, signal, and return the circuit to the module. The sensors communicate with the Park Assist Module using a dedicated serial bus communication circuit. The Park Assist Module monitors the PTS Sensor when the vehicle in reverse and during the self-test while the vehicle is in drive between 18 km/h (11 mph) and 40 km/h (25 mph). The Park Assist Module sets the OBDII code when the Park Assist Sensor Signal circuit is not to factory specifications.

OBDII Code B1291 Dodge - Park Assist Sensor 4 - AutoCodes.com — B1291 Dodge Code - Park Assist Sensor 4

What does this mean?

What are the Possible Causes of the DTC B1291 Dodge?

Faulty Park Assist Sensor 4
Park Assist Sensor 4 harness is open or shorted
Park Assist Sensor 4 circuit poor electrical connection
Faulty Park Assist Module

How to Fix the DTC B1291 Dodge?

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 does this mean?

Code Tech Notes

B1291-11 PTS SENSOR 4 CIRCUIT SHORT TO GROUND
B1291-12 PTS SENSOR 4 CIRCUIT SHORT TO BATTERY
B1291-25 PTS SENSOR 4 SIGNAL SHAPE / WAVEFORM FAILURE
B1291-92 PTS SENSOR 4 PERFORMANCE OR INCORRECT OPERATION

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1291 Dodge 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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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 B1291 Dodge Code

1. What does the OBDII code B1291 for Dodge, specifically related to Park Assist Sensor 4, indicate?

The B1291 code indicates a fault in the Park Assist Sensor 4 system, which is responsible for detecting obstacles when parking.

2. What are common symptoms of a B1291 trouble code in a Dodge vehicle?

Common symptoms include a malfunctioning or disabled Park Assist System, failure of the Park Assist Sensor 4 to work correctly, and possibly an illuminated warning light on the dashboard.

3. What are possible causes of the B1291 trouble code related to Park Assist Sensor 4 in a Dodge?

Possible causes include a faulty Park Assist Sensor 4, damaged wiring or connectors in the sensor circuit, or issues with the Park Assist control module.

4. How can I diagnose the B1291 code for Park Assist Sensor 4 in my Dodge?

Diagnosis typically involves using an OBDII scanner to retrieve the code, inspecting the wiring and connectors for any visible damage, and testing the Park Assist Sensor 4 and related components for proper functionality.

5. Can I repair the B1291 code related to Park Assist Sensor 4 in my Dodge myself?

While simple checks like inspecting wiring connections can be done by DIY enthusiasts, diagnosing and repairing complex issues with the Park Assist system may require professional expertise and specialized tools.

6. Are there any tips for preventing the B1291 trouble code related to Park Assist Sensor 4 in my Dodge?

Regularly inspecting the Park Assist system components, keeping sensors clean from dirt and debris, and avoiding collisions or impacts to the sensors can help prevent issues leading to the B1291 trouble code.

7. How important is it to address the B1291 trouble code for Park Assist Sensor 4 in my Dodge promptly?

Addressing the B1291 code promptly is recommended to ensure the proper functioning of the Park Assist system, which enhances safety during parking maneuvers and helps prevent collisions.

8. Can the B1291 trouble code related to Park Assist Sensor 4 affect other vehicle systems in my Dodge?

While the B1291 code specifically relates to the Park Assist Sensor 4 system, a malfunction in this area may impact the overall performance of the Park Assist system and potentially affect other related systems.

9. Is it safe to continue driving my Dodge with the B1291 trouble code related to Park Assist Sensor 4?

It is generally safe to drive the vehicle with the B1291 trouble code, but it is advisable to address the issue promptly to ensure the proper functioning of the Park Assist system.

10. How much can I expect to pay to repair the B1291 trouble code for Park Assist Sensor 4 in my Dodge?

The cost of repairing the B1291 code can vary based on the specific issue causing the fault, labor rates in your area, and whether you choose to address the problem yourself or take it to a professional mechanic.