Injector Bank 1 Supply Voltage
Can I Drive?
No -- Stop Driving
DIY Difficulty
advanced
Estimated Cost
$400-$2,200
What does MAXXFORCE-P2146-DT mean?
The MAXXFORCE-P2146-DT (MaxxForce) diesel fault code means: Injector Bank 1 Supply Voltage. This is a serious severity code.
Common Symptoms
- Multi-cylinder misfire
- No start
- CEL
Probable Causes (Ranked by Likelihood)
- Shorted injector Likely
- ECM injector driver failure Possible
Step-by-Step Diagnostic Procedure
Disconnect injectors one-by-one to isolate short.
Replace shorted injector.
Frequently Asked Questions
What is P2146 on a MaxxForce DT (7.6L)?
P2146 on a MaxxForce DT (7.6L) (2007-2015) indicates: Injector Bank 1 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 $400-$2,200 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.