PACCAR Engine Service & Repair
Expert diagnostics, maintenance, and repair for all PACCAR diesel engines at our Sidney and Brookville, Ohio locations
About PACCAR Inc.
PACCAR manufactures premium diesel engines under the PACCAR name, powering Kenworth and Peterbilt trucks. Known for fuel efficiency, reliability, and advanced technology, PACCAR engines are designed specifically for their truck applications.
Headquarters:
Bellevue, Washington, USA
Founded:
1905
Specialties:
PACCAR Engine Models We Service
MX-13
Applications:
- Long-haul trucks
- Regional haul
- Vocational
MX-11
Applications:
- Regional haul
- Vocational
- Weight-sensitive
PX-9
Applications:
- Medium-duty
- Vocational
- Refuse
PX-7
Applications:
- Medium-duty
- Delivery
- Utility
Common PACCAR Fault Codes
P1515
EGR Differential Pressure Sensor Circuit
Symptoms:
- Reduced power
- Rough idle
- Black smoke
Possible Causes:
- Faulty pressure sensor
- Clogged EGR cooler
- Wiring issue
P244B
DPF Differential Pressure Too High
Symptoms:
- Frequent regenerations
- Power loss
- High fuel consumption
Possible Causes:
- Restricted DPF
- Faulty sensors
- Exhaust leak
P20EE
SCR NOx Catalyst Efficiency Below Threshold
Symptoms:
- Engine derate
- Emissions warning
- DEF consumption high
Possible Causes:
- Bad DEF
- SCR catalyst damage
- Injector problems
P0404
EGR Circuit Range/Performance
Symptoms:
- Rough running
- Emissions issues
- Power reduction
Possible Causes:
- Stuck EGR valve
- Carbon buildup
- Actuator failure
Experiencing a fault code? Our certified technicians can diagnose and repair any PACCAR engine issue.
Get Diagnostic HelpPACCAR Maintenance Schedule
Oil & Filter Change
Every 40,000-60,000 miles
Use PACCAR approved low-ash engine oil
Fuel Filter Service
Every 40,000-60,000 miles
Replace both fuel filters and water separator
Valve Adjustment
Every 150,000-200,000 miles
Adjust intake/exhaust valves and injectors
DPF Service
Every 250,000-400,000 miles
Professional cleaning to remove accumulated ash
Coolant System Flush
Every 300,000 miles
Complete system flush with OAT coolant
Air Dryer Service
Every 100,000 miles
Replace desiccant cartridge and check valves
PACCAR Emission Systems
DPF System
PACCAR DPF with intelligent regeneration control
Maintenance Tips:
- Allow complete regeneration cycles
- Monitor backpressure readings
- Use recommended engine oil
- Avoid excessive idle time
Common Issues:
- Incomplete regenerations
- Sensor failures
- Face plugging from oil consumption
- Cracked filter substrate
SCR System
Advanced SCR with twin dosing for optimal NOx reduction
Maintenance Tips:
- Use ISO 22241 compliant DEF
- Check injector for buildup
- Monitor catalyst efficiency
- Replace filters as scheduled
Common Issues:
- DEF injector clogging
- Pump module failures
- NOx sensor drift
- Catalyst contamination
DEF System
Heated DEF system with quality monitoring
Maintenance Tips:
- Maintain proper DEF levels
- Check heating elements seasonally
- Use clean filling equipment
- Monitor for contamination
Common Issues:
- Level sensor failures
- Heater malfunctions
- Quality sensor faults
- Tank contamination
Expert PACCAR Engine Service at Two Convenient Locations
With over 15 years of experience, Wayne Truck & Trailer is your trusted partner for all PACCAR engine repairs and maintenance.
Serving Sidney, Brookville, Dayton, Piqua, Troy, Bellefontaine, and surrounding areas