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B1947 is a diagnostic trouble code (DTC) for "Climate Control A/C Post Evaporator Sensor Circuit Short To Ground". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light is on diagnostic inspection. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
The B1947 code is a manufacturer-specific body code related to the climate control system. In this case, the engine control module (ECM) has detected a fault in the evaporator sensor for the climate control system or A/C.
A code B1947 will be stored when the ECM detects a voltage signal from the post evaporator sensor that is signaling a short, or a signal other than approximately 5 volts (depending on vehicle make and model).
Several problems may cause a B1947 code including:
Symptoms of a B1947 code may include: * Check engine or warning light may illuminate * Climate control or A/C may not work correctly * There may be no symptoms other than a stored B1947 code
A mechanic may use several methods to diagnose a B1947 trouble code, including:
Because a vehicle’s safe driving operation most likely will not be impacted due to faults that store a B1947 code, this code is not considered to be a serious code. When this code appears, it is recommended to take your vehicle to your local service center or mechanic for repair and diagnosis as soon as possible.
Several repairs can fix a B1947 trouble code and include:
It is always recommended to take all proper safety precautions when working with the electrical components of your vehicle and to carefully follow service instructions. With more complicated electrical repairs, it is recommended to seek assistance from a professional.
YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.