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The description for diagnostic trouble code (DTC) P2112 is, "Throttle Actuator Control System - Stuck Closed." This DTC sets when the fault status indicates that the throttle plate is at a lower angle than commanded. There are three areas where the fault could be; a mechanical problem with the throttle body (physically stuck closed or binding at a certain position), a wiring issue (circuits are either open or shorted between the throttle body and PCM) or a faulty Powertrain Control Module (PCM). Considering the throttle body has already been replaced, it is unlikely for the new part to have a mechanic issue although not impossible, especially if a salvage/used component was installed. In my experience PCMs are rarely the cause, therefore I would highly suspect a wiring issue. I'd recommend performing a visual inspection of the engine wiring harness for any damage caused by heat from the exhaust, rodents or poor repairs performed in the past. Be sure to inspect the connector to the throttle body as well as the connector pins to ensure they haven't been bent over, corroded or broken. You can read more about the P2112 DTC here: https://www.yourmechanic.com/article/p2112-obd-ii-trouble-code-throttle-actuator-control-system-stuck-closed-by-spencer-clayton
engine-codes.com/p2112_chrysler.html Possible Causes and Repair Information for P2112 Chrysler code. Learn what doesP2112 ... 2005 CHRYSLER 300 Engine And Engine Cooling:engine Details
Having similar trouble. Started with 12 codes now after replacing fuel pump and vapor management valve I still have 3 codes P2112 P2104 and P0451. Starts right up but idles very rough little response to pedal. I replaced tps and throttle body motor no change. Is it possible I need to have the PCM flashed? Any help or resolve to someone else's problem helps. Thanks!
code p2111 throttle actuator control system actuator stuck open. throttle actuator control system circuit malfunction. brake vacuum implausible signal. code p2112 throttle actuator control system actuator stuck closed.throttle actuator control system circuit malfunction. code p2135 accelerator pedal position sensor switch a b voltage correlation. throttle position sensor switch a b voltage correlation. electronic throttle position sensor switch 1 implausible signal. did not see code p210406 that code too long.
P2111 - Throttle Actuator Control System Stuck Open. P2112 - Throttle Actuator Control System Stuck Closed. P2238 - O2 Sensor Positive Current Control Circuit Low Bank 1 Sensor 1
For the P2111 & P2112 you will need to replace the throttle body this can be pricey since the TAC is built into it. Try cleaning it good and see what happens. This can also trigger the P2238 code if its dumping fuel. For the P2238 check the connections on the o2 sensor or replace the upstream o2 sensor that should correct it.
P2104 Throttle Actuator Control System - Forced Idle P2112 Throttle Actuator Control System - Stuck Closed If it's not the pedal, it has to be throttle body, senor or harness related.
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