B2112 Dodge Code - 5 Volt Supply Circuit Low
Quick Answer
The Front Control Module monitors the A/C Pressure Transducer 5-Volt Supply Circuit. Common causes include Faulty A/C Pressure Transducer, A/C Pressure Transducer harness is open or shorted, A/C Pressure Transducer 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
- B2112 Dodge indicates 5 Volt Supply Circuit Low.
- Common causes
- Common causes include Faulty A/C Pressure Transducer, A/C Pressure Transducer harness is open or shorted, A/C Pressure Transducer 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 B2112 Dodge Description
What are the Possible Causes of the DTC B2112 Dodge?
- Faulty A/C Pressure Transducer
- A/C Pressure Transducer harness is open or shorted
- A/C Pressure Transducer circuit poor electrical connection
- Faulty Front Control Module (FCM)
How to Fix the DTC B2112 Dodge?
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 B2112 Dodge 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 B2112 Dodge Code
1. What does the OBDII code B2112 mean on a Dodge vehicle?
The B2112 code indicates a "5 Volt Supply Circuit Low," meaning the 5-volt reference signal to certain sensors is below the expected range.
2. What are the common symptoms of the B2112 code?
Symptoms may include warning lights on the dash (e.g., check engine light), erratic sensor readings, poor engine performance, or stalling.
3. What causes the B2112 code to appear?
Common causes include a short to ground in the 5-volt reference circuit, a faulty sensor drawing excessive current, a damaged wiring harness, or a failing powertrain control module (PCM).
4. How can I diagnose the B2112 code?
Start by inspecting the wiring and connectors for damage or corrosion, check for shorts or open circuits, and test the sensor connected to the 5-volt circuit.
5. Can a bad sensor trigger the B2112 code?
Yes, a malfunctioning sensor that uses the 5-volt reference circuit can cause the voltage to drop and trigger the B2112 code.
6. Is it safe to drive with the B2112 code?
Driving with this code is not recommended as it can cause poor engine performance or stalling, potentially leading to unsafe driving conditions.
7. How do I fix the B2112 code on my Dodge?
Repairs may involve fixing or replacing damaged wiring, replacing a faulty sensor, or addressing issues in the PCM if it’s determined to be the cause.
8. What tools are needed to troubleshoot the B2112 code?
You’ll need a multimeter to check voltages, a scan tool to read live data and confirm the code, and possibly a wiring diagram for your Dodge model.
9. Can a low battery voltage cause the B2112 code?
While uncommon, low battery voltage or charging system issues can potentially affect the 5-volt reference circuit and trigger the code.
10. How much does it cost to repair the B2112 code?
Repair costs vary depending on the cause, ranging from $50 for simple wiring repairs to over $500 if the PCM needs replacement.
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