b1228 short in the outside air temperature sensor circuit
B1228 Short in the Outside Air Temperature Sensor Circuit
OBD2 Code: B1228
Description: Short in the outside air temperature sensor circuit.
Definition: This code indicates that there is a short circuit detected in the wiring or connector of the outside air temperature sensor, which can affect the vehicle’s climate control system and other related functions.
B1228 – Short in the outside air temperature sensor circuit
Typical Severity: Moderate
Common Causes
B1228 – Short in the outside air temperature sensor circuit
Description: The Powertrain Control Module (PCM) monitors the resistance of the Outside Air Temperature (OAT) sensor. If the PCM detects a short in the OAT sensor circuit, it will set code B1228.
Common causes of B1228:
- Faulty or damaged outside air temperature sensor
- Shorted wiring in the OAT sensor circuit
- Corrosion or poor connections at the OAT sensor connector
- Faulty PCM
Common Misdiagnosis
OBD2 Code: B1228
Description: Short in the Outside Air Temperature Sensor Circuit
Common Misdiagnosis: Replacing the outside air temperature sensor without checking for wiring issues or connector problems.
Common Diagnostic Steps
OBD2 Code: B1228
Description: Short in the Outside Air Temperature Sensor Circuit
Common Diagnostic Steps:
- Verify the code using an OBD-II scanner and clear it to see if it returns.
- Inspect the outside air temperature sensor for physical damage or corrosion.
- Check the wiring and connectors between the sensor and the vehicle’s ECU for any signs of wear, damage, or disconnection.
- Measure the resistance of the outside air temperature sensor with a multimeter to ensure it is within manufacturer specifications.
- If applicable, check for any related Technical Service Bulletins (TSBs) that may address known issues with this circuit.
- If all else fails, consider replacing the outside air temperature sensor with a new one from a reputable source.