B370C Code - Rain Sensor Intensity Signal Circuit
Quick Answer
Ignition voltage is supplied to the windshield outside moisture sensor from the Body Control Module (BCM). Common causes include Faulty Windshield Outside Moisture Sensor (Rain Sensor), Windshield Outside Moisture Sensor harness is open or shorted, Windshield Outside Moisture 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
- B370C indicates Rain Sensor Intensity Signal Circuit.
- Common causes
- Common causes include Faulty Windshield Outside Moisture Sensor (Rain Sensor), Windshield Outside Moisture Sensor harness is open or shorted, Windshield Outside Moisture 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 B370C Description
The windshield outside moisture sensor uses the moisture sensor signal 2 circuit to command wiper motor wipe cycles and to confirm the moisture sensor signal 1 is being received. If at anytime communication between the windshield outside moisture sensor and BCM is lost, the BCM will use the inputs from the windshield wiper/washer switch in the delay positions to operate the wiper motor at continuous variable delay intervals.
The Diagnostic Trouble Code (DTC) sets if an open, short to ground or a short to voltage has been detected on moisture sensor signal 2 circuit.
What are the Possible Causes of the DTC B370C?
- Faulty Windshield Outside Moisture Sensor (Rain Sensor)
- Windshield Outside Moisture Sensor harness is open or shorted
- Windshield Outside Moisture Sensor circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B370C?
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 B370C 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
- B370C Buick — Rain Sensor Intensity Signal Circuit
- B370C Cadillac — Rain Sensor Intensity Signal Circuit
- B370C Chevrolet — Rain Sensor Intensity Signal Circuit
- B370C GMC — Rain Sensor Intensity Signal Circuit
- B370C Pontiac — Rain Sensor Intensity Signal Circuit
- B370C Saturn — Rain Sensor Intensity Signal Circuit
Frequently Asked Questions about B370C Code
1. What are the common symptoms of OBDII code B370C (Rain Sensor Intensity Signal Circuit)?
- The common symptoms include malfunctioning automatic windshield wipers and inaccurate rain sensor readings.
2. What causes OBDII code B370C to be triggered?
- This code is typically triggered by issues such as a faulty rain sensor, damaged wiring, or a malfunctioning control module.
3. How can I diagnose the Rain Sensor Intensity Signal Circuit problem?
- You can diagnose the issue by visually inspecting the rain sensor and its wiring for any visible damage. Using a multimeter to test the sensor's resistance can also help identify the problem.
4. What are some repair tips for fixing OBDII code B370C?
- Repair tips may include checking and repairing any damaged wiring, replacing the rain sensor if necessary, and resetting the control module to clear the code.
5. Can I drive my vehicle with the Rain Sensor Intensity Signal Circuit issue?
- While driving with this issue may not pose an immediate safety risk, it is recommended to address the problem promptly to ensure the proper functioning of your windshield wipers.
6. How much does it cost to repair OBDII code B370C?
- The cost of repair can vary depending on the extent of the issue and the specific components that need to be replaced. It is advisable to consult a professional mechanic for an accurate estimate.
7. Will resetting the OBDII code B370C clear the issue permanently?
- Resetting the code may temporarily clear the issue, but if the underlying problem with the Rain Sensor Intensity Signal Circuit is not addressed, the code is likely to reappear.
8. Is it possible to bypass the rain sensor to avoid OBDII code B370C?
- Bypassing the rain sensor is not recommended as it can compromise the functionality of your vehicle's automatic wipers and may lead to other issues down the line.
9. Can extreme weather conditions affect the Rain Sensor Intensity Signal Circuit?
- Yes, extreme weather conditions such as heavy rain or intense sunlight can sometimes impact the performance of the rain sensor and trigger OBDII code B370C.
10. How often should the rain sensor be inspected to prevent OBDII code B370C?
- It is advisable to include the rain sensor in your regular vehicle maintenance schedule and inspect it annually or whenever you notice any issues with your automatic wipers.
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