AutoCodes – Dodge – B1602 Dodge

B1602 Dodge Code - Left Solar Sensor Circuit High

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: B1602 Dodge indicates Left Solar Sensor Circuit High.
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 2,522

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 B1602 Dodge 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 high voltage threshold, the A/C Heater Control will set the OBDII code.

OBDII Code B1602 Dodge - Left Solar Sensor Circuit High - AutoCodes.com — B1602 Dodge Code - Left Solar Sensor Circuit High

What does this mean?

What are the Possible Causes of the DTC B1602 Dodge?

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 B1602 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1602 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 B1602 Dodge Code

1. What does the OBDII code B1602 mean for a Dodge vehicle?

Code B1602 indicates a high voltage issue in the left solar sensor circuit, which measures ambient light levels for automatic climate control or lighting systems.

2. What are the common symptoms of a B1602 code?

Symptoms may include malfunctioning automatic headlights, erratic climate control behavior, or the illumination of the check engine light.

3. What causes the B1602 code to appear?

The most common causes are a faulty left solar sensor, damaged wiring or connectors in the sensor circuit, or an issue with the Body Control Module (BCM).

4. Can I still drive my Dodge with the B1602 code?

Yes, you can still drive the vehicle, but certain convenience features like automatic headlights or climate control may not work properly.

5. How is the B1602 code diagnosed?

A technician will typically inspect the left solar sensor, check for damaged wires or loose connections, and use a scan tool to verify circuit voltages and BCM functionality.

6. How can I fix the B1602 code?

Repairs may include replacing the left solar sensor, repairing damaged wiring, cleaning corroded connectors, or reprogramming or replacing the BCM if necessary.

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

The left solar sensor is usually mounted on the dashboard near the windshield, often integrated into the defroster grille.

8. How much does it cost to repair a B1602 code?

Repair costs can vary, but replacing the solar sensor typically costs $50 to $150 for parts, plus labor. Wiring or BCM repairs may increase the cost.

9. Can I reset the B1602 code without repairs?

Clearing the code with a scan tool may temporarily turn off the warning, but the code will likely return if the underlying issue is not resolved.

10. Is the B1602 code related to any safety systems?

No, the B1602 code is not directly related to safety systems but affects convenience features like automatic lighting and climate control adjustments.