Ambient Air Temperature Sensor Circuit B Range/Performance

Descripción

This code suggests that the ambient air temperature sensor 'B' is not providing a reading within its expected range or is performing erratically. The car's computer is getting confusing signals from this sensor.

Pasos de reparación

1. 1 Check the ambient air temperature sensor 'B' connector for corrosion, loose pins, or damage and clean or reseat the connection as needed.
2. 2 Inspect the wiring harness running to the ambient air temperature sensor 'B' for chafing, broken wires, or exposure to heat damage.
3. 3 Test the ambient air temperature sensor 'B' with a multimeter to verify its resistance matches the manufacturer's specification for the current temperature.
4. 4 Clear the diagnostic trouble code and drive the vehicle to see if the code returns, ruling out an intermittent electrical glitch.
5. 5 Replace the ambient air temperature sensor 'B' if testing confirms it is reading out of range or not responding correctly.
6. 6 Repair or replace any damaged wiring or connectors in the ambient air temperature sensor 'B' circuit.
7. 7 Have a professional diagnose the engine control module (ECM) if the sensor, wiring, and connections all test normal, as the ECM may need reprogramming or replacement.

Diagnóstico y costo