B1946 Ford Code - Climate Control A/C Post Evaporator Sensor Circuit Failure
Quick Answer
The Dual Automatic Temperature Control (DATC) Module monitors the Climate Control A/C Post Evaporator Sensor. Common causes include Faulty Climate Control A/C Post Evaporator Sensor, Climate Control A/C Post Evaporator Sensor harness is open or shorted, Climate Control A/C Post Evaporator Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B1946 Ford indicates Climate Control A/C Post Evaporator Sensor Circuit Failure.
- Common causes
- Common causes include Faulty Climate Control A/C Post Evaporator Sensor, Climate Control A/C Post Evaporator Sensor harness is open or shorted, Climate Control A/C Post Evaporator Sensor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code B1946 Ford Description
What are the Possible Causes of the DTC B1946 Ford?
- Faulty Climate Control A/C Post Evaporator Sensor
- Climate Control A/C Post Evaporator Sensor harness is open or shorted
- Climate Control A/C Post Evaporator Sensor circuit poor electrical connection
- Faulty Dual Automatic Temperature Control (DATC)
How to Fix the DTC B1946 Ford?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1946 Ford code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about B1946 Ford Code
1. What does the OBDII code B1946 mean on a Ford vehicle?
Code B1946 indicates a failure in the A/C Post Evaporator Sensor Circuit, which monitors the temperature of the air after it passes through the evaporator.
2. What are the common symptoms of the B1946 code?
Common symptoms include poor A/C performance, inconsistent cabin temperature, and the climate control system not functioning as expected.
3. What causes the B1946 code to appear?
This code can be caused by a faulty post-evaporator temperature sensor, damaged wiring or connectors in the sensor circuit, or issues with the climate control module.
4. Can I drive my Ford with the B1946 code?
Yes, you can drive the vehicle, but the A/C system may not work properly, leading to discomfort in extreme temperatures.
5. How do I diagnose the B1946 code?
Start by inspecting the sensor and its wiring for visible damage, check the connector for corrosion or loose connections, and test the sensor's resistance with a multimeter.
6. How can I fix the B1946 code?
Repairs may involve replacing the post-evaporator temperature sensor, repairing damaged wiring, cleaning corroded connectors, or reprogramming the climate control module.
7. How much does it cost to repair the B1946 code?
The cost can vary depending on labor rates and parts, but replacing the sensor typically ranges from $100 to $300.
8. Can a faulty A/C post-evaporator sensor cause other problems?
Yes, it can affect the overall climate control system’s efficiency and may lead to further strain on the A/C components.
9. How do I prevent the B1946 code from recurring?
Regular maintenance, including checking the A/C system components and ensuring connectors are clean and secure, can help prevent this issue.
10. Will resetting the code fix the problem?
Resetting the code may turn off the check engine light temporarily, but it won’t address the underlying issue causing the code.
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