Jeep P1CBF: Electropump Drive Unit -Feedback - Signal Calculation Failure
Is your scanner showing Jeep P1CBF?
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Jeep P1CBF: Electropump Drive Unit -Feedback - Signal Calculation Failure
OVERVIEWWhat Does The Jeep P1CBF Code Mean?
This diagnostic checks the performance of the hydraulic pump. The Smart Driver Unit (SDU) which is external to the Transmission Control Module (TCM) drives the hydraulic pump based upon a PWM command signal received from the Transmission Control Module (TCM). This diagnostic uses three feedback signals.
The PWM driver, internal to TCM, returns a command feedback signal. The SDU returns to the TCM the hydraulic pump driver feedback signal. The TCM separately receives the hydraulic pump feedback signal confirming the pump state. This diagnostic checks the performance of the hydraulic pump.
What Are The Potential Causes Of The Jeep P1CBF Code?
- Pump feedback signal circuit open
- Pump feedback signal circuit shorted to ground
- Pump feedback signal circuit shorted to voltage
- Smart drive unit (SDU)
- Transmission control module (TCM)
Recommended Parts
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>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
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Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Jeep P1CBF, DTCDECODE.
