RA0034461002 | Genuine Detroit Diesel ® CPC Module CPC4 Nafta
RA0034461002 | Genuine Detroit Diesel ® CPC Module CPC4 Nafta is backordered and will ship as soon as it is back in stock.
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RA0034461002 | Genuine Detroit Diesel ® CPC Module CPC4 Nafta
Part Number: RA0034461002
Condition: New
Manufacture/Brand: Detroit Diesel
Related Part Numbers: A0034461002001, A0034461002002, A0034461002003
Description:
The CPC4 module — short for Common Powertrain Controller 4 — is an electronic control unit (ECU) used primarily in Freightliner and Western Star trucks, especially models equipped with Detroit Diesel engines. Common Powertrain Controller, CPC Module CPC4 Nafta
Fits For Freightliner Cascadia models, particularly 2014–2019, Freightliner M2 chassis (medium-duty) and Western Star trucks
Specificatioms:
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Operating Voltage Range: 22 – 30 V
Operating Temperature Range: –40 °C to +80 °C
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Purpose:
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The CPC4 is essentially the main communication and control hub between the engine, transmission, and various vehicle systems. It handles:
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Signs of a Bad CPC Module
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No throttle response “No communication with CPC” error on diagnostics SPN 609 FMI 12 or other CPC-related fault codes Truck won’t start or dies intermittently Blown fuses or CAN bus errors |
About the Manufacturer – Detroit Diesel:
Detroit Diesel is a leading American manufacturer of heavy-duty diesel engines, transmissions, and aftertreatment systems, primarily for the commercial trucking industry. Founded in 1938 and now a subsidiary of Daimler Truck North America, Detroit is best known for its DD Series engines — including the DD13, DD15, and DD16 — which power Freightliner and Western Star trucks.
Detroit also produces advanced technologies such as Detroit™ Axles, Detroit™ Connect telematics, and integrated powertrains, offering fleet operators improved fuel efficiency, uptime, and diagnostics. The company is headquartered in Detroit, Michigan, and continues to play a central role in modernizing emissions systems and performance standards in heavy-duty transportation.
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