Injector Group B Supply Voltage
The MAXXFORCE-P2149-13 (MaxxForce) diesel fault code means: Injector Group B Supply Voltage. This is a serious severity code.
- Keep driving?
- No — stop driving
- DIY difficulty
- advanced
- Estimated cost
- $450-$2,500
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Common Symptoms
- Multi-cylinder misfire
- Derate
Probable Causes (Ranked by Likelihood)
- Shorted injector in group B Likely
Frequently Asked Questions
What is P2149 on a MaxxForce 13 (12.4L)?
P2149 on a MaxxForce 13 (12.4L) (2008-2014) indicates: Injector Group B 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 P2149 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 P2149?
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
Step-by-Step Diagnostic Procedure
Isolate group B injectors.
Replace harness or injector.
Commonly Affected Vehicles
- 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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