B0202
Side Airbag Sensor Circuit Open (Right Front)
Criticalsensor
Overview
The B0202 diagnostic trouble code indicates that the body control module has identified a side airbag sensor circuit open (right front) issue. This code means a body sensor or its circuit is not providing expected readings. Accurate sensor data is important for proper operation of safety and convenience systems throughout the vehicle.
Symptoms
- Poor engine performance
- Speedometer reading incorrectly
- Erratic gauge readings on dashboard
- Idle speed fluctuations
Common Causes
- Failed speed sensor or position sensor
- Sensor out of calibration
- Physical damage to sensor
- Incorrect sensor installed
Diagnosis Steps
- 1Connect an OBD-II scanner and read all stored trouble codes and freeze frame data
- 2Locate the specific sensor referenced by the code
- 3Inspect the sensor connector for corrosion, damage, or loose pins
- 4Test the sensor output using a multimeter or scan tool live data
- 5Check the wiring between the sensor and the PCM for opens or shorts
Estimated Repair Cost
$75 — $350
Cost varies by vehicle, location, and repair shop. Includes parts and labor.
Commonly Affected Vehicles
Chevrolet CruzeMazda 3Volkswagen GolfFord Focus
Related Codes
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LowP0072Ambient Air Temperature Sensor Circuit Low
LowP0073Ambient Air Temperature Sensor Circuit High
LowP0074Ambient Air Temperature Sensor Circuit Intermittent
LowP0095Intake Air Temperature Sensor 2 Circuit
LowFrequently Asked Questions
Most automotive sensors last 80,000-150,000 miles, though this varies by sensor type and driving conditions. Oxygen sensors and temperature sensors tend to degrade gradually over time.