AutoCodes – Cadillac – B1333 Cadillac

B1333 Cadillac Code - Lower Right Air Temperature Sensor

Quick Answer

The Instrument Panel Module (IPM) monitors the temperature sensors to maintain the comfort level inside of the vehicle. Common causes include Faulty Lower Right Air Temperature Sensor, Lower Right Air Temperature Sensor harness is open or shorted, Lower Right Air 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: B1333 Cadillac indicates Lower Right Air Temperature Sensor.
Common causes: Common causes include Faulty Lower Right Air Temperature Sensor, Lower Right Air Temperature Sensor harness is open or shorted, Lower Right Air 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 746

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 Dec 12, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1333 Cadillac Description

The Instrument Panel Module (IPM) monitors the temperature sensors to maintain the comfort level inside of the vehicle. The temperature sensors are a 2 wire negative temperature co-efficient thermistor. The IPM applies 5 volts to internal input resistors that are connected to the signal circuits of the air temperature sensors. The IPM provides the ground to the air temperature sensors through the low reference circuit. The IPM monitors the voltage drop across the air temperature sensors and uses the inputs for automatic control calculations. When the air temperatures are cold, the resistance of the sensors are high and the voltage signals are high. When the air temperatures are hot, the resistance of the sensors are low and the voltage signals are low. The IPM converts the voltage values to count values where one volt is approximately equal to 51 counts.

OBDII Code B1333 Cadillac - Lower Right Air Temperature Sensor - AutoCodes.com — B1333 Cadillac Code - Lower Right Air Temperature Sensor

What does this mean?

What are the Possible Causes of the DTC B1333 Cadillac?

Faulty Lower Right Air Temperature Sensor
Lower Right Air Temperature Sensor harness is open or shorted
Lower Right Air Temperature Sensor circuit poor electrical connection
Faulty Instrument Panel Module (IPM)

How to Fix the DTC B1333 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 B1333 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.

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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 B1333 Cadillac Code

1. What does the OBDII code B1333 mean on a Cadillac?

The B1333 code indicates an issue with the Lower Right Air Temperature Sensor, which monitors cabin air temperature for proper climate control function.

2. What are the common symptoms of a B1333 code?

Symptoms may include inconsistent cabin temperature, improper heating or cooling, or the climate control system not responding as expected.

3. What causes the B1333 code to appear?

Possible causes include a faulty lower right air temperature sensor, damaged wiring or connectors, or a malfunctioning climate control module.

4. How can I diagnose the B1333 code?

Diagnose by inspecting the sensor and its wiring for damage, testing the sensor's resistance, and using a scan tool to check for related faults in the climate control system.

5. Can I drive my Cadillac with a B1333 code active?

Yes, but the climate control system may not function properly, leading to discomfort in maintaining cabin temperature.

6. How do I fix a B1333 code on my Cadillac?

Repairs may include replacing the lower right air temperature sensor, repairing damaged wiring, or resetting the climate control system.

7. Where is the lower right air temperature sensor located?

The sensor is typically located in the lower section of the cabin, near the passenger side, but its exact location varies by model.

8. How much does it cost to repair a B1333 code?

Repair costs depend on the specific issue, but sensor replacement generally ranges from $100 to $300, including parts and labor.

9. Can a B1333 code be caused by a blown fuse?

While unlikely, a blown fuse affecting the climate control system could indirectly contribute to this code. Check fuses as part of the diagnosis.

10. Will clearing the code fix the issue?

Clearing the code will not fix the underlying problem; you must address the root cause, such as a faulty sensor or wiring issue, to resolve it permanently.