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eTorque System Malfunction on 2022 Ram 1500 V6

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Mike T. · rep 0 · May 25, 2:27 AM · 1 replies · solved · Question

Vehicle: 2022 Ram 1500 Big Horn

Hey everyone,

I'm reaching out because I've encountered a concerning issue with my 2022 Ram 1500 Big Horn, which has the 3.6L V6 eTorque engine. A few days ago, I got a 'eTorque System Malfunction' message on my dash, and the check engine light came on.

The truck seems to drive mostly fine, but I've noticed a slight hesitation when accelerating from a stop, and the auto start/stop feature (which uses eTorque) isn't working at all. I'm a bit worried as this truck is relatively new.

Has anyone else experienced this with their newer Ram 1500 eTorque system? What was the cause, and how difficult was the repair? Any insights would be greatly appreciated!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 2:27 AM

0

ClearTheCode admin answer:

The eTorque system in your 2022 Ram 1500 is an innovative mild-hybrid setup designed to improve fuel efficiency and provide torque assist. When you get an 'eTorque System Malfunction' message, it typically points to an issue within this 48-volt system. Here are the most common culprits:

  1. 48-Volt Battery Degradation/Failure: The eTorque system relies on a dedicated 48-volt lithium-ion battery pack. Like any battery, it can degrade over time or develop internal faults, leading to insufficient power for the Belt Starter Generator (BSG) unit.
  2. Belt Starter Generator (BSG) Unit Failure: The BSG replaces the traditional alternator and starter motor, acting as both. It can fail internally or have issues with its connections, preventing it from generating power or assisting the engine.
  3. Wiring Harness or Connector Issues: Given the higher voltage, the eTorque system has specific wiring and connectors. Corrosion, loose connections, or damaged wiring can interrupt communication or power flow within the system.
  4. DC-DC Converter Issues: This component converts the 48-volt power to 12-volt power for the rest of the truck's electrical system. A fault here can cascade into eTorque system warnings.
  5. Software Glitches: Less common, but sometimes a software issue in the Powertrain Control Module (PCM) or Hybrid Control Module can trigger false warnings.

Common OBD-II Codes:

  • P0A8D: 48V Battery Pack Voltage Sensor Circuit
  • P0A0F: DC/DC Converter Status
  • P0A1B: Drive Motor 'A' Control Module Performance
  • P0C0B: Hybrid/EV Battery Pack Current Sensor 'A' Circuit

When to See a Shop:

While the truck might seem to drive normally, a persistent eTorque malfunction means you're losing the benefits of the system (fuel economy, auto start/stop, torque assist), and it could indicate a more serious underlying electrical issue. Due to the specialized nature of the 48-volt system and the potential for high voltage, it is strongly recommended to take your truck to a Ram dealership. They have the specific diagnostic tools, training, and safety equipment to properly diagnose and repair eTorque system faults. Attempting DIY repairs on a high-voltage system can be dangerous.

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