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B1602 Dodge Code - Left Solar Sensor Circuit High

Quick Answer

The B1602 diagnostic trouble code (DTC) for Dodge vehicles indicates a problem with the left solar sensor circuit being too high. Common causes include Faulty left solar sensor, Wiring issues such as shorts or open circuits in the sensor circuit, Climate control module malfunction. 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, Wiring issues such as shorts or open circuits in the sensor circuit, Climate control module malfunction.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code B1602 Dodge Description

The B1602 diagnostic trouble code (DTC) for Dodge vehicles indicates a problem with the left solar sensor circuit being too high. The solar sensor is a component of the automatic climate control system that measures the intensity of sunlight and adjusts the interior temperature accordingly. When the sensor circuit reads a high voltage, it means that the sensor is detecting excessive sunlight, which can lead to inaccurate temperature readings and improper climate control system operation.

OBDII Code B1602 Dodge - Left Solar Sensor Circuit High
B1602 Dodge Code - Left Solar Sensor Circuit High

Common Causes of B1602 Dodge

  1. Faulty left solar sensor
  2. Wiring issues such as shorts or open circuits in the sensor circuit
  3. Climate control module malfunction
  4. Corrosion or damage to sensor connectors
  5. Environmental factors affecting sensor performance (e.g., dirt, debris)

Symptoms of B1602 Dodge

  1. Inaccurate temperature readings on the climate control display
  2. Climate control system not responding to changes in sunlight intensity
  3. Inconsistent interior temperature regulation
  4. Climate control system blowing hot or cold air unexpectedly
  5. Climate control system not maintaining set temperature

How to Fix B1602 Dodge

  1. Begin by diagnosing the issue using a scan tool to retrieve the specific DTC and verify the left solar sensor circuit high condition.
  2. Inspect the left solar sensor and its wiring for any visible damage, corrosion, or loose connections. Repair or replace as necessary.
  3. Test the sensor's voltage output using a multimeter to ensure it is within the specified range. Replace the sensor if it is out of range.
  4. Check the climate control module for any faults or malfunctions that may be causing the high voltage in the sensor circuit. Replace the module if needed.
  5. Clear the DTC from the vehicle's memory using the scan tool and test the climate control system to ensure proper operation.

Cost to Fix B1602 Dodge

The typical repair costs for addressing a B1602 DTC related to the left solar sensor circuit high issue can vary depending on the specific cause of the problem and the parts and labor required for the repair. In general, the cost of replacing a faulty solar sensor or repairing wiring issues can range from $100 to $300, while replacing a climate control module may cost between $200 and $500. Additional costs for diagnostic time and labor rates at auto repair shops should be factored in, with hourly rates typically ranging from $80 to $150. It is advisable to consult with a professional technician to obtain a more accurate estimate based on the specific vehicle make and model, as well as the extent of the repairs needed.

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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.

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