AutoCodes – Jeep – B1603 Jeep

B1603 Jeep Code - Right Solar Sensor

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 Right Solar Sensor, Right Solar Sensor harness is open or shorted, Right 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: B1603 Jeep indicates Right Solar Sensor.
Common causes: Common causes include Faulty Right Solar Sensor, Right Solar Sensor harness is open or shorted, Right 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 3,298

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
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B1603 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. If the Right Solar Sensor falls out of predetermined ranges a Diagnostic Trouble Code (DTC) will set.

OBDII Code B1603 Jeep - Right Solar Sensor - AutoCodes.com — B1603 Jeep Code - Right Solar Sensor

What does this mean?

What are the Possible Causes of the DTC B1603 Jeep?

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

How to Fix the DTC B1603 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 does this mean?

Code Tech Notes

B1603-11 RIGHT SOLAR SENSOR CIRCUIT SHORT TO GROUND
B1603-12 RIGHT SOLAR SENSOR CIRCUIT SHORT TO BATTERY
B1603-92 RIGHT SOLAR SENSOR PERFORMANCE OR INCORRECT OPERATION

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1603 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 B1603 Jeep Code

1. What does the OBDII code B1603 mean on a Jeep?

B1603 indicates an issue with the right solar sensor, which is part of the automatic climate control system.

2. What are the symptoms of the B1603 code?

Symptoms may include improper functioning of the automatic climate control system, such as incorrect temperature adjustments or failure to regulate cabin comfort.

3. What causes the B1603 code to appear?

Common causes include a faulty right solar sensor, damaged wiring, poor electrical connections, or issues with the climate control module.

4. How can I diagnose the B1603 code?

Start by visually inspecting the right solar sensor and its wiring for damage or disconnections. Use a scan tool to check for related codes and confirm sensor functionality.

5. Where is the right solar sensor located in a Jeep?

The right solar sensor is typically mounted on the dashboard near the windshield on the passenger side.

6. Can I drive my Jeep with the B1603 code?

Yes, you can drive your Jeep, but the automatic climate control may not work correctly, which could affect cabin comfort.

7. How do I fix the B1603 code?

Repairs may involve replacing the right solar sensor, repairing or replacing damaged wiring, or addressing issues in the climate control module.

8. How much does it cost to fix the B1603 code on a Jeep?

The cost varies depending on the root cause, but replacing a solar sensor typically costs $50-$150 for parts and $50-$100 for labor.

9. Can I reset the B1603 code without fixing the issue?

You can clear the code with an OBDII scanner, but it will likely return unless the underlying issue is resolved.

10. Is the B1603 code specific to Jeeps?

No, other vehicles with automatic climate control systems may also experience a similar code for solar sensor issues, though the code number may differ.