Engine Codes
- ECM-121: Fuel Pressure Low
- ECM-122: Fuel Pressure High
- ECM-123: Fuel Delivery Error
- ECM-124: Fuel Temperature High
- ECM-125: Fuel Level Low
- ECM-126: Fuel Filter Clogged
- ECM-127: Fuel Injector Fault
- ECM-128: Fuel Pump Fault
- ECM-129: Fuel Rail Pressure Sensor Fault
- ECM-130: Fuel Pressure Regulator Fault
Transmission Codes
- TCM-111: Transmission Fluid Pressure Low
- TCM-112: Transmission Fluid Pressure High
- TCM-113: Transmission Fluid Temperature High
- TCM-114: Transmission Fluid Level Low
- TCM-115: Transmission Filter Clogged
- TCM-116: Transmission Solenoid Fault
- TCM-117: Transmission Output Speed Sensor Fault
- TCM-118: Transmission Input Speed Sensor Fault
- TCM-119: Transmission Range Sensor Fault
- TCM-120: Transmission Control Module Fault
ABS Codes
- ABS-111: Wheel Speed Sensor Fault
- ABS-112: ABS Control Module Fault
- ABS-113: Hydraulic Pressure Low
- ABS-114: Hydraulic Pressure High
- ABS-115: Solenoid Valve Fault
- ABS-116: Accumulator Fault
- ABS-117: Brake Fluid Level Low
- ABS-118: Brake Fluid Temperature High
- ABS-119: Brake Pad Wear Indicator
- ABS-120: ABS Lamp Fault
Airbag Codes
- AIR-111: Airbag Sensor Fault
- AIR-112: Airbag Control Module Fault
- AIR-113: Airbag Inflator Fault
- AIR-114: Seat Belt Pretensioner Fault
- AIR-115: Child Seat Sensor Fault
- AIR-116: Airbag Deployment Indicator Fault
- AIR-117: Airbag Off Indicator Fault
- AIR-118: Airbag System Readiness Indicator Fault
- AIR-119: Airbag System Malfunction Indicator Fault
- AIR-120: Airbag System Diagnostic Trouble Code Indicator Fault
Other Codes
- BCM-111: Body Control Module Fault
- IPC-111: Instrument Cluster Fault
- HVAC-111: Heating, Ventilation, and Air Conditioning (HVAC) Control Module Fault
- RADIO-111: Radio Fault
- WIPER-111: Wiper Control Module Fault
- LAMP-111: Lamp Control Module Fault
- DOOR-111: Door Control Module Fault
- SEAT-111: Seat Control Module Fault
- MIRROR-111: Mirror Control Module Fault
- WINDOW-111: Window Control Module Fault
- LATCH-111: Latch Control Module Fault
These are just a few of the possible fault codes for a 2004 Freightliner Columbia with a Detroit engine. If you experience any of these codes, it is important to have your vehicle diagnosed and repaired by a qualified technician.