AutoCodes – Cadillac – B0337 Cadillac

B0337 Cadillac Code - Inside Temperature Sensor Short To Ground

Quick Answer

The ambient air temperature sensor allows the Heating, Ventilation, and Air Conditioning (HVAC) Control Module to monitor the temperature of the air surrounding the front of the vehicle. Common causes include Faulty Inside Temperature Sensor, Inside Temperature Sensor harness is open or shorted, Inside Temperature Sensor circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B0337 Cadillac indicates Inside Temperature Sensor Short To Ground.
Common causes: Common causes include Faulty Inside Temperature Sensor, Inside Temperature Sensor harness is open or shorted, Inside Temperature Sensor circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 738

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 11, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0337 Cadillac Description

The ambient air temperature sensor allows the Heating, Ventilation, and Air Conditioning (HVAC) Control Module to monitor the temperature of the air surrounding the front of the vehicle. The inside air temperature sensor allows the HVAC control module to monitor the temperature of the air inside the passenger compartment. The module applies 5 volts to internal input resistors that are connected to the signal circuits of the air temperature sensors. The module provides ground to the air temperature sensors through the low reference circuits. The HVAC control module monitors the voltage drops across the air temperature sensors and uses the inputs for automatic control calculations. The HVAC control module also uses the ambient air temperature input to calculate the value of the ambient air temperature display. When the air temperatures are cold, the resistances of the sensors are high and the voltage signals are high. When the air temperatures are hot, the resistances of the sensors are low and the voltage signals are low.

OBDII Code B0337 Cadillac - Inside Temperature Sensor Short To Ground - AutoCodes.com — B0337 Cadillac Code - Inside Temperature Sensor Short To Ground

What does this mean?

What are the Possible Causes of the DTC B0337 Cadillac?

Faulty Inside Temperature Sensor
Inside Temperature Sensor harness is open or shorted
Inside Temperature Sensor circuit poor electrical connection
Faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module

How to Fix the DTC B0337 Cadillac?

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 B0337 Cadillac 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.

Need more information about the B0337 Cadillac code?

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Need Help with the Code?

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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 B0337 Cadillac Code

1. What are the common symptoms of OBDII code B0337 (Cadillac) - Inside Temperature Sensor Short To Ground?

- Common symptoms include inaccurate interior temperature readings on the climate control system, erratic HVAC operation, and potential issues with the air conditioning system.

2. What can cause the Inside Temperature Sensor Short To Ground code B0337 in a Cadillac?

- The code B0337 can be triggered by a short to ground in the wiring harness, a faulty inside temperature sensor, or a malfunction in the climate control module.

3. How can I diagnose the Inside Temperature Sensor Short To Ground code B0337 in my Cadillac?

- To diagnose the B0337 code, you can use a scan tool to read the fault codes, inspect the wiring harness for any visible damage, test the inside temperature sensor for proper resistance, and check the climate control module for any faults.

4. What are the repair options for OBDII code B0337 (Cadillac) - Inside Temperature Sensor Short To Ground?

- Repair options for the B0337 code include repairing any damaged wiring, replacing the faulty inside temperature sensor, or reprogramming the climate control module if necessary.

5. Can I drive my Cadillac with the Inside Temperature Sensor Short To Ground code B0337?

- It is not recommended to drive your Cadillac with the B0337 code present, as it can lead to inaccurate temperature readings and potential issues with the climate control system.

6. How much does it typically cost to fix OBDII code B0337 (Cadillac) - Inside Temperature Sensor Short To Ground?

- The cost of fixing the B0337 code can vary depending on the underlying cause, but it may range from $100 to $300 for parts and labor.

7. Are there any DIY repair tips for resolving the Inside Temperature Sensor Short To Ground code B0337?

- DIY repair tips include checking and repairing any damaged wiring, replacing the inside temperature sensor if needed, and clearing the fault code with a scan tool after the repair.

8. Can a faulty inside temperature sensor cause other issues in my Cadillac besides triggering the B0337 code?

- Yes, a faulty inside temperature sensor can cause issues such as incorrect climate control operation, poor HVAC performance, and discomfort for the occupants due to inaccurate temperature readings.

9. Is it necessary to reset the climate control system after fixing OBDII code B0337 (Cadillac) - Inside Temperature Sensor Short To Ground?

- It is recommended to reset the climate control system or clear the fault code using a scan tool after fixing the B0337 code to ensure proper operation and accurate temperature readings.

10. How long does it typically take to repair the Inside Temperature Sensor Short To Ground code B0337 in a Cadillac?

- The repair time for the B0337 code can vary depending on the specific cause and complexity of the repair, but it may take anywhere from 1 to 2 hours to complete the repair.