Injector Group A Supply Voltage
The MAXXFORCE-P2146-13 (MaxxForce) diesel fault code means: Injector Group A Supply Voltage. This is a serious severity code.
Unverified. We could not confirm this code's definition against freely available manufacturer documentation, so treat the meaning, severity and fix guidance on this page as unconfirmed. Check it against the manufacturer's service information for your exact model and serial range before acting on it. This page is kept out of search engines for that reason, and we are working through this family manual by manual.
- Keep driving?
- No — stop driving
- DIY difficulty
- advanced
- Estimated cost
- $450-$2,500
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View pilot availability →What Are the Symptoms of MAXXFORCE-P2146-13?
- Multi-cylinder misfire
- Derate
What Causes MAXXFORCE-P2146-13? (Most Likely First)
- Shorted injector in group A Likely
- ECM driver failure Possible
Can I Still Drive with MAXXFORCE-P2146-13?
No — stop driving. MAXXFORCE-P2146-13 is rated serious severity. Continuing to drive in this state risks further damage — get it looked at before your next trip.
Frequently Asked Questions
What is P2146 on a MaxxForce 13 (12.4L)?
P2146 on a MaxxForce 13 (12.4L) (2008-2014) indicates: Injector Group A Supply Voltage. This is a known fault code on the MaxxForce engine family and typically points to the causes listed above.
Can I drive with P2146 on my MaxxForce?
No. Stop driving and arrange for towing. Continued operation risks catastrophic damage or stranding.
How much does it cost to fix MaxxForce P2146?
Repair cost is typically $450-$2,500 depending on the underlying cause and shop rate. Many MaxxForce faults (especially EGR cooler, head bolt, and VGT repairs) are major expenses that drove fleet owners to repower with Cummins or retire these trucks early.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose MAXXFORCE-P2146-13?
Isolate group A injectors.
Replace shorted injector.
Which Vehicles Commonly Get MAXXFORCE-P2146-13?
- International ProStar MaxxForce 13
- International LoneStar MaxxForce 13
- International TranStar 8600 MaxxForce 13
- International PayStar 5900 MaxxForce 13
- International 9900i MaxxForce 13
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