AutoCodes – Pontiac – B1331 Pontiac

B1331 Pontiac Code - Upper 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 Upper Right Air Temperature Sensor, Upper Right Air Temperature Sensor harness is open or shorted, Upper 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: B1331 Pontiac indicates Upper Right Air Temperature Sensor.
Common causes: Common causes include Faulty Upper Right Air Temperature Sensor, Upper Right Air Temperature Sensor harness is open or shorted, Upper 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 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 Nov 29, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1331 Pontiac 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 B1331 Pontiac - Upper Right Air Temperature Sensor - AutoCodes.com — B1331 Pontiac Code - Upper Right Air Temperature Sensor

What does this mean?

What are the Possible Causes of the DTC B1331 Pontiac?

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

How to Fix the DTC B1331 Pontiac?

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 B1331 Pontiac 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 B1331 Pontiac Code

1. What are the common symptoms of OBDII code B1331 in a Pontiac related to the Upper Right Air Temperature Sensor?

The common symptoms include poor engine performance, rough idling, and potential issues with the vehicle's fuel efficiency.

2. What are the possible causes of OBDII code B1331 in a Pontiac related to the Upper Right Air Temperature Sensor?

The code B1331 can be triggered by a faulty upper right air temperature sensor, wiring issues, or a malfunction in the sensor's circuit.

3. How can I diagnose the issue with the Upper Right Air Temperature Sensor in my Pontiac when OBDII code B1331 is present?

You can use a multimeter to test the resistance of the sensor, check for any visible signs of damage or corrosion in the wiring, and ensure proper connection of the sensor.

4. Can I drive my Pontiac with OBDII code B1331 related to the Upper Right Air Temperature Sensor without causing further damage?

It is not recommended to drive your vehicle with this code active, as it can lead to poor engine performance and potentially cause damage to other components over time.

5. What are the repair options for fixing OBDII code B1331 in a Pontiac related to the Upper Right Air Temperature Sensor?

Repair options include replacing the faulty sensor, repairing any damaged wiring, and clearing the code using an OBDII scanner.

6. Are there any preventive measures I can take to avoid OBDII code B1331 in my Pontiac related to the Upper Right Air Temperature Sensor?

Regular maintenance checks, ensuring proper sensor function during routine inspections, and addressing any engine performance issues promptly can help prevent this code from appearing.

7. How much does it typically cost to repair OBDII code B1331 in a Pontiac related to the Upper Right Air Temperature Sensor?

The cost of repair can vary depending on the extent of the issue, but it may range from $100 to $300 for parts and labor.

8. Can a DIY enthusiast fix OBDII code B1331 related to the Upper Right Air Temperature Sensor in a Pontiac?

If you have the necessary tools and knowledge, you may be able to replace the sensor or address wiring issues yourself. However, it is recommended to consult a professional if you are unsure.

9. Will clearing the OBDII code B1331 related to the Upper Right Air Temperature Sensor in my Pontiac solve the underlying issue?

Clearing the code will only reset the check engine light temporarily. It is essential to diagnose and address the root cause of the problem to prevent the code from reappearing.

10. How urgent is it to address OBDII code B1331 in a Pontiac related to the Upper Right Air Temperature Sensor?

While the vehicle may still be drivable with this code, it is crucial to address it promptly to prevent potential damage to other engine components and ensure optimal performance.