B1947 Code - Climate Control A/C Post Evaporator Sensor Circuit Short To Ground
Quick Answer
The diagnostic trouble code B1947 indicates an issue with the Climate Control A/C Post Evaporator Sensor Circuit Short To Ground in the vehicle's air conditioning system. Common causes include Wiring or connector damage or corrosion affecting the post evaporator sensor circuit, A faulty post evaporator sensor, Electrical short to ground in the sensor circuit. 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
- B1947 indicates Climate Control A/C Post Evaporator Sensor Circuit Short To Ground.
- Common causes
- Common causes include Wiring or connector damage or corrosion affecting the post evaporator sensor circuit, A faulty post evaporator sensor, Electrical short to ground in the sensor circuit.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code B1947 Description
The diagnostic trouble code B1947 indicates an issue with the Climate Control A/C Post Evaporator Sensor Circuit Short To Ground in the vehicle's air conditioning system. The post evaporator sensor is responsible for monitoring the temperature of the air after it passes through the evaporator, which helps regulate the overall climate control system. When this sensor circuit detects a short to ground, it means there is an abnormal connection between the sensor and the vehicle's electrical ground. This can lead to inaccurate temperature readings, which can cause the climate control system to malfunction.
Common Causes of B1947
- Wiring or connector damage or corrosion affecting the post evaporator sensor circuit
- A faulty post evaporator sensor
- Electrical short to ground in the sensor circuit
- Issues with the climate control module or related components
- Water intrusion or moisture affecting the sensor circuit
Symptoms of B1947
- Inconsistent or inaccurate temperature readings on the climate control display
- Weak or inadequate cooling performance from the air conditioning system
- The air conditioning system may turn on or off unexpectedly
- The climate control system may not respond to temperature adjustments
- The vehicle cabin may feel uncomfortably warm even when the air conditioning is running
How to Fix B1947
- Begin by conducting a thorough inspection of the wiring and connectors in the post evaporator sensor circuit to check for any damage, corrosion, or loose connections.
- Test the post evaporator sensor using a multimeter to determine if it is functioning properly or if it needs to be replaced.
- Check for any electrical shorts to ground in the sensor circuit and address them accordingly.
- If necessary, replace the post evaporator sensor with a new one and ensure it is properly calibrated.
- Clear the diagnostic trouble codes from the vehicle's system using a diagnostic scan tool and test the climate control system to verify that the issue has been resolved.
Cost to Fix B1947
The cost of repairing a Climate Control A/C Post Evaporator Sensor Circuit Short To Ground issue can vary depending on the make and model of the vehicle, the severity of the problem, and the labor rates at the auto repair shop. On average, the repair costs for this type of issue can range from $150 to $400, including parts and labor. It is recommended to consult with a certified technician or mechanic to get a more accurate estimate based on the specific circumstances of the vehicle. Labor rates at auto repair shops typically range from $80 to $150 per hour, but rates may differ based on location and other factors.
Need more information about the B1947 code?
Need more information on how to fix the B1947 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B1947 code diagnosed by a professional: Find a repair shop in your area
Code B1947 Information for Specific Makes
- B1947 Ford — Climate Control A/C Post Evaporator Sensor Circuit Short To Ground
- B1947 Lincoln — Climate Control A/C Post Evaporator Sensor Circuit Short To Ground
- B1947 Mercury — Climate Control A/C Post Evaporator Sensor Circuit Short To Ground
Frequently Asked Questions about B1947 Code
1. What are the common symptoms of OBDII code B1947?
The common symptoms of OBDII code B1947 include a malfunctioning climate control system, irregular cooling or heating of the vehicle cabin, and potentially a complete failure of the A/C system.
2. What could cause the Climate Control A/C Post Evaporator Sensor Circuit to short to ground?
Common causes of the Climate Control A/C Post Evaporator Sensor Circuit shorting to ground include damaged wiring, a faulty sensor, or issues with the climate control module.
3. How can I diagnose the short to ground issue in the Climate Control A/C Post Evaporator Sensor Circuit?
Diagnosing the short to ground issue typically involves inspecting the wiring harness for any visible damage, testing the sensor for functionality, and using a multimeter to check for continuity and shorts in the circuit.
4. Can a DIYer repair the Climate Control A/C Post Evaporator Sensor Circuit short to ground issue?
Repairing the short to ground issue in the Climate Control A/C Post Evaporator Sensor Circuit may require a good understanding of automotive electrical systems. It is recommended to consult a professional mechanic for accurate diagnosis and repair.
5. What are the potential dangers of ignoring OBDII code B1947?
Ignoring OBDII code B1947 can lead to further damage to the climate control system, reduced comfort while driving, and potential safety hazards if the A/C system fails during extreme weather conditions.
6. Is it safe to continue driving with OBDII code B1947 triggered?
It is not advisable to continue driving with OBDII code B1947 triggered, as it may result in unreliable climate control operation and potential A/C system failure, affecting your comfort and safety while driving.
7. How much does it typically cost to repair the Climate Control A/C Post Evaporator Sensor Circuit short to ground issue?
The cost of repairing the Climate Control A/C Post Evaporator Sensor Circuit short to ground can vary depending on the extent of the damage, parts needed, and labor costs. It is recommended to obtain quotes from different repair shops.
8. Can a faulty climate control module trigger OBDII code B1947?
Yes, a faulty climate control module can potentially trigger OBDII code B1947 if it causes a short to ground in the A/C Post Evaporator Sensor Circuit.
9. Are there any preventive measures to avoid OBDII code B1947 in the future?
To prevent OBDII code B1947 in the future, it is advisable to regularly inspect the climate control system components, ensure proper maintenance of the A/C system, and address any electrical issues promptly.
10. How long does it typically take to repair the Climate Control A/C Post Evaporator Sensor Circuit short to ground issue?
The repair time for the Climate Control A/C Post Evaporator Sensor Circuit short to ground issue can vary based on the complexity of the diagnosis and the extent of the repairs needed. It is recommended to consult with a professional mechanic for an accurate estimate.
Discuss the causes and fixes for B1947 OBDII Code
Code B1947 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.