B1874 Code - Cellular Phone Handset Not Present
Quick Answer
The Body Control Module (BCM) monitors the Cellular Phone Handset. Common causes include Faulty Cellular Phone Handset, Cellular Phone Handset harness is open or shorted, Cellular Phone Handset 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
- B1874 indicates Cellular Phone Handset Not Present.
- Common causes
- Common causes include Faulty Cellular Phone Handset, Cellular Phone Handset harness is open or shorted, Cellular Phone Handset 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 B1874 Description
What are the Possible Causes of the DTC B1874?
- Faulty Cellular Phone Handset
- Cellular Phone Handset harness is open or shorted
- Cellular Phone Handset circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B1874?
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 B1874 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 B1874 Code
1. What does OBDII code B1874 mean?
B1874 indicates that the vehicle's system has detected the cellular phone handset is not present or properly connected.
2. What are the common symptoms of code B1874?
Symptoms may include the inability to use the vehicle's integrated hands-free calling system or a warning message related to the phone connection.
3. What causes the B1874 code to appear?
The most common causes include a disconnected or missing handset, a faulty connection between the handset and the vehicle, or a malfunction in the telematics module.
4. How can I fix the B1874 code?
Check if the handset is properly connected to the vehicle, ensure all wiring and connectors are secure, and inspect the telematics module for any faults.
5. Can a software issue cause the B1874 code?
Yes, outdated or corrupted telematics software could trigger the code. Updating the system may resolve the issue.
6. Does the B1874 code affect vehicle performance?
No, it does not impact the vehicle's performance but may disable hands-free phone functionality.
7. How do I diagnose the B1874 code?
Use a diagnostic scanner to retrieve the code, then inspect the handset, connectors, and telematics module for faults or damage.
8. Can a damaged cable trigger the B1874 code?
Yes, a damaged or frayed cable connecting the handset to the vehicle can cause this code to appear.
9. Is the B1874 code specific to certain car models?
It is more common in vehicles equipped with older integrated cellular phone systems but may vary by manufacturer.
10. Can I clear the B1874 code myself?
You can clear the code with an OBDII scanner, but if the issue isn't fixed, the code may reappear.
Discuss the causes and fixes for B1874 OBDII Code
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