DTC P2072: Throttle Actuator Control (TAC) System - Ice Breakage
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P2072 - THROTTLE ACTUATOR CONTROL (TAC) SYSTEM - ICE BREAKAGE
| Description: | This DTC only identifies that the strategy has carried out several open and close cycles to remove potential ice build up. This DTC does not imply any system concerns, only that the mode has occurred, and that mode may be causing a long start time. | ||
| Possible Causes: |
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| Diagnostic Aids: | Do not install a new electronic throttle body (ETB) for this DTC. Check the PCV system for evidence of water or ice. Disconnect the intake air fresh air plenum from the throttle body. Check for water or oily residue at the PCV fresh air port. Disconnect the tube at the valve cover and check the tube for ice obstruction/ice. To check the PCV system, start the engine and place a piece of cardboard on the crankcase vent in the rocker cover. If the cardboard is held on the crankcase vent and fumes are not exiting, reconnect the tube to the valve cover and the intake air port. If the test passes, the PCV system is OK. If the cardboard is not held in place, turn off the engine and check the PCV valve side of the system for ice or obstruction and repair as necessary. If no obstruction is found, isolate and repair any obstruction in the intake manifold connection. If no obstruction is found, make sure the PCV coolant heater is functional and repair as necessary. If no concern is present, make sure the PCV valve is allowing the correct vacuum flow and repair as necessary. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the Description, Possible Causes and Diagnostic Aids for the DTC in table. | ||