P0263 — Cylinder 1 Contribution/Balance Fault
Seen on: Cummins · Detroit · Navistar
Cylinder 1 Contribution/Balance Fault. Common causes: Faulty injector cylinder 1, low compression.
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How serious is it?
Caution. Limp to the next safe stop.
Most likely causes
- Faulty injector cylinder 1
- low compression
- Injector electrical harness fault
- injector stiction
FAQ
Cylinder 1 Contribution/Balance Fault. Common causes: Faulty injector cylinder 1, low compression.
Caution — Limp to the next safe stop.
The most common cause is: Faulty injector cylinder 1. Other possibilities include low compression; Injector electrical harness fault; injector stiction.
Limp to the next safe stop. When in doubt, get a qualified mobile diesel tech on the truck before continuing.
Find a mechanic or related guides
General diagnostic guidance for diesel engines (Cummins, Detroit, PACCAR, Volvo, Mack and more). Not a substitute for a scan-tool diagnosis on your specific truck.