AutoCodes - OBDII Code List - B1331 PONTIAC

B1331 PONTIAC - Upper Right Air Temperature Sensor

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3
Table of contents

B1331 PONTIAC Possible Causes

  • 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 do I fix code B1331 PONTIAC?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
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Cost of diagnosing the B1331 PONTIAC code

Labor: 1.0

The cost of diagnosing the B1331 PONTIAC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

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

More Information

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Repair Importance Level: 3
 
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