Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSDODGE AND RAM20241500 TRXREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 425 (RADIO FREQUENCY MODULE (RF HUB) - DTCS B1A74-01 TO C0077-00 - 1500)
2024 Dodge and Ram 1500 TRX
Section 425 (Radio Frequency Module (RF Hub) - DTCS B1A74-01 To C0077-00 - 1500)
2024 Dodge and Ram 1500 TRXSECTION Section 425 (Radio Frequency Module (RF Hub) - DTCS B1A74-01 To C0077-00 - 1500)
WARNING: This page is about a different car, the 2023 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
- DTC Troubleshooting
- B1A74-01-Passive Entry Antenna 4-General Electrical Failure
- B1A74-11-Passive Entry Antenna 4-Circuit Short To Ground
- B1A74-12-Passive Entry Antenna 4-Circuit Short To Battery
- B1A74-13-Passive Entry Antenna 4-Circuit Open
- B1A75-01-Passive Entry Antenna 5-General Electrical Failure
- B1A75-11-Passive Entry Antenna 5-Circuit Short To Ground
- B1A75-12-Passive Entry Antenna 5-Circuit Short To Battery
- B1A75-13-Passive Entry Antenna 5-Circuit Open
- B1A76-13-Remote Start Antenna Circuit-Circuit Open
- B1A7B-01-Immobilizer Antenna (Kin/IGNM)-General Electrical Failure
- B1A7D-01-Start Button-General Electrical Failure
- B1A7D-2A-Start Button-Stuck
- B215B-12-Ignition Run/Start 2 Control-Circuit Short To Battery
- B215B-14-Ignition Run/Start 2 Control-Circuit Short To Ground Or Open
- B2199-16-Battery Voltage-Circuit Voltage Below Threshold
- B2199-17-Battery Voltage-Circuit Voltage Above Threshold
- B21DD-84-System Voltage-Signal Below Allowable Range
- B21DD-85-System Voltage-Signal Above Allowable Range
- B2205-00-Original VIN Missing / Mismatch
- B222C-00-Vehicle Configuration Not Programmed
- B22A0-49-RF Hub-Internal Electronic Failure
- B22A9-00-Ecu Internal Performance
- B259A-11-Front Left Door Handle Sense-Circuit Short To Ground
- B259A-13-Front Left Door Handle Sense-Circuit Open
- B259B-11-Front Right Door Handle Sense-Circuit Short To Ground
- B259B-13-Front Right Door Handle Sense-Circuit Open
- B25A3-00-Front Left Door Handle Sensor
- B25A4-00-Front Right Door Handle Sensor
- C0077-00-Low Tire Pressure
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.