AutoCodes – Jeep – B1601 Jeep

B1601 Jeep Code - Left Solar Sensor Circuit Low

Quick Answer

The Heating Ventilation and Air Conditioning (HVAC) A/C Heater Module uses a variety of sensors to adjust HVAC operation to obtain optimal performance. Common causes include Faulty Left Solar Sensor, Left Solar Sensor harness is open or shorted, Left Solar Sensor 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: B1601 Jeep indicates Left Solar Sensor Circuit Low.
Common causes: Common causes include Faulty Left Solar Sensor, Left Solar Sensor harness is open or shorted, Left Solar Sensor 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 1,710

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 May 26, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1601 Jeep Description

The Heating Ventilation and Air Conditioning (HVAC) A/C Heater Module uses a variety of sensors to adjust HVAC operation to obtain optimal performance. These sensors are continuously monitored by the A/C Heater Module to assure that they are in range. The A/C Heater Control monitors the Left Solar Sensor. If the Left Sunload Sensor input is out of range toward the low voltage threshold, the A/C Heater Control will set the OBDII code.

OBDII Code B1601 Jeep - Left Solar Sensor Circuit Low - AutoCodes.com — B1601 Jeep Code - Left Solar Sensor Circuit Low

What does this mean?

What are the Possible Causes of the DTC B1601 Jeep?

Faulty Left Solar Sensor
Left Solar Sensor harness is open or shorted
Left Solar Sensor circuit poor electrical connection
Faulty Heating Ventilation and Air Conditioning (HVAC) A/C Heater Module

How to Fix the DTC B1601 Jeep?

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 B1601 Jeep 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 B1601 Jeep Code

1. What does the OBDII code B1601 mean on a Jeep?

The B1601 code indicates a "Left Solar Sensor Circuit Low," meaning the left solar sensor is detecting a lower voltage than expected.

2. What are the symptoms of the B1601 code in a Jeep?

Symptoms may include improper operation of the automatic climate control system, inconsistent cabin temperature regulation, or the air conditioning system failing to adjust to sunlight levels.

3. What causes the B1601 code to appear on a Jeep?

Common causes include a faulty left solar sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning climate control module.

4. How do I diagnose the B1601 code on my Jeep?

Start by inspecting the left solar sensor for damage, checking the wiring and connectors for corrosion or disconnection, and testing the sensor's voltage output with a multimeter.

5. Can I drive my Jeep with the B1601 code active?

Yes, the vehicle is drivable, but the automatic climate control system may not function properly, impacting cabin comfort.

6. How do I fix the B1601 code on a Jeep?

Repairs may include replacing the left solar sensor, repairing damaged wiring or connectors, or updating or replacing the climate control module.

7. Where is the left solar sensor located in a Jeep?

The left solar sensor is typically located on the dashboard near the windshield, where it can measure sunlight entering the cabin.

8. How much does it cost to repair the B1601 code on a Jeep?

The cost can vary depending on the issue. Replacing the solar sensor may cost $50â€“$150 for the part, plus additional labor costs if taken to a mechanic.

9. Can a blown fuse cause the B1601 code on a Jeep?

While uncommon, a blown fuse in the climate control or sensor circuit can potentially cause the code. Check the fuse box for any blown fuses.

10. What tools are needed to fix the B1601 code on a Jeep?

Basic tools include a multimeter for voltage testing, a scan tool to clear the code, and potentially a screwdriver or trim removal tool to access the sensor.