What Does B0332 Mean?
This code indicates the Body Control Module (BCM) or climate control module has detected that the outside air temperature sensor circuit is shorted to ground. The sensor voltage is reading abnormally low, below the expected operating range, preventing accurate ambient temperature readings. This affects automatic climate control operation, radiator fan control timing, and potentially temperature display functions.
Common Causes
40%
Damaged sensor wiring harness with exposed wire contacting ground, often from road debris, corrosion, or physical damage near front bumper/grille mounting location
30%
Failed outside air temperature sensor with internal short circuit to ground
20%
Corroded or moisture-contaminated sensor connector causing intermittent or permanent short to ground
10%
BCM or climate control module internal fault causing false short detection
Diagnostic Steps
1
Visually inspect the outside air temperature sensor location (typically behind front bumper/grille area) for physical damage, corrosion, water intrusion, or damaged wiring harness
2
Disconnect the outside air temperature sensor connector and measure resistance across the sensor terminals using a digital multimeter; should read 2-5k ohms at 68°F depending on manufacturer specifications (consult factory data)
3
With sensor disconnected, measure resistance between each sensor wire terminal at the harness connector and chassis ground; both should read infinite resistance (open circuit). Any continuity indicates a short to ground in the wiring
4
Inspect the sensor connector terminals for corrosion, bent pins, or moisture; clean with electrical contact cleaner and dielectric grease if contamination is present
5
If wiring and sensor test good, backprobe the signal wire at the BCM/climate control module connector with a multimeter while wiggling the harness to check for intermittent shorts
6
Clear codes, reconnect all components, and monitor live data for ambient temperature sensor reading; verify it changes appropriately when heat/cold is applied to sensor (hairdryer or ice pack test)
Estimated Repair Cost
$75 - $350
Parts + labor, varies by vehicle and location
This code indicates the Body Control Module (BCM) or climate control module has detected that the outside air temperature sensor circuit is shorted to ground. The sensor voltage is reading abnormally low, below the expected operating range, preventing accurate ambient temperature readings. This affe...
The most common cause of B0332 (Outside Air Temp Sensor Short to Ground) is: Damaged sensor wiring harness with exposed wire contacting ground, often from road debris, corrosion, or physical damage near front bumper/grille mounting location
Typical repair costs for B0332 range from $75 to $350, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is completely safe to drive with this code. The fault only affects automatic climate control performance and ambient temperature display accuracy; all safety systems remain fully functional.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B0332 to identify the root cause.
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Quick Info
Category
Body
System
Climate Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
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