B1946 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 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 Description
What are the Possible Causes of the DTC B1946?
- 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?
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 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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Information for Specific Makes
- B1946 Ford — Climate Control A/C Post Evaporator Sensor Circuit Failure
- B1946 Lincoln — Climate Control A/C Post Evaporator Sensor Circuit Failure
- B1946 Mercury — Climate Control A/C Post Evaporator Sensor Circuit Failure
Frequently Asked Questions about B1946 Code
1. What are the common symptoms of OBDII code B1946 related to Climate Control A/C Post Evaporator Sensor Circuit Failure?
The common symptoms include a malfunctioning air conditioning system, inconsistent cooling, or complete failure of the A/C system.
2. What are the possible causes of OBDII code B1946 related to Climate Control A/C Post Evaporator Sensor Circuit Failure?
Possible causes include a faulty post evaporator sensor, damaged wiring or connectors, issues with the climate control unit, or a problem with the A/C compressor.
3. How can I diagnose OBDII code B1946 related to Climate Control A/C Post Evaporator Sensor Circuit Failure?
Diagnosis involves using an OBDII scanner to retrieve the code, conducting a visual inspection of the sensor and its connections, and testing the sensor's resistance with a multimeter.
4. Can I still drive my vehicle with OBDII code B1946 related to Climate Control A/C Post Evaporator Sensor Circuit Failure?
It is not recommended to drive with this code present, as it can lead to further damage to the A/C system and discomfort while driving in extreme temperatures.
5. How can I repair OBDII code B1946 related to Climate Control A/C Post Evaporator Sensor Circuit Failure?
Repair options include replacing the faulty post evaporator sensor, repairing any damaged wiring or connectors, resetting the climate control unit, and checking the A/C compressor for issues.
6. Are there any DIY tips for fixing OBDII code B1946 related to Climate Control A/C Post Evaporator Sensor Circuit Failure?
While some basic diagnostics can be done at home, it is recommended to consult a professional mechanic for accurate diagnosis and proper repair of this code.
7. How much does it cost to repair OBDII code B1946 related to Climate Control A/C Post Evaporator Sensor Circuit Failure?
The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $500 or more, including parts and labor.
8. Can a faulty post evaporator sensor cause other issues in the A/C system besides triggering OBDII code B1946?
Yes, a faulty sensor can cause improper cooling, inconsistent temperature regulation, and overall poor performance of the A/C system.
9. How important is it to address OBDII code B1946 related to Climate Control A/C Post Evaporator Sensor Circuit Failure promptly?
It is important to address this code promptly to avoid further damage to the A/C system and ensure comfortable driving conditions, especially in extreme weather.
10. Is it possible for OBDII code B1946 to be a recurring issue even after repair?
It is possible for the code to reappear if the root cause of the problem is not properly diagnosed and fixed, so thorough troubleshooting is essential to prevent recurrence.
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