Vehicle: 2014 Chevrolet Camaro, V6-3.6L,
Problem: This vehicle came to the shop
because the malfunction indicator light was on and the engine
exhibited a significant loss of power.
When the technician connected the scan tool, he retrieved the
following diagnostic trouble codes (DTCs):
P2100 – Throttle Actuator Control (TAC) Motor Control Circuit
P2101 – Throttle Actuator Position Performance
P2176 – Minimum Throttle Position Not Learned Present
With the scan tool, the technician verified that the Throttle
Position Sensor (TPS) “Desired” value matched the TPS “Actual”.
Both were 5% — for about 5 seconds — then the “Actual” value
spiked to 28%. When that happened, he could hear the throttle
body move. At that point he called ALLDATA Tech-Assist.
The Tech-Assist consultant suggested that the technician clean
the throttle body because carbon deposits could cause the
throttle plate to hang open. After cleaning the throttle body, he
recommended performing a battery “hard reset” and a complete
“drive cycle” to ensure the DTCs did not return. If the DTCs came
back, then the throttle body would need to be replaced.
The technician cleaned the throttle body and cleared the DTCs.
After the drive cycle, the DTCs came back immediately. Based on
the recommendation from the Tech-Assist consultant, the
technician replaced the throttle body, cleared the DTCS and
performed another drive cycle.
Confirmed Repair: The drive cycle allowed
all of the IM readiness monitors to run to completion. The engine
started and ran normally. The DTCs did not return. Problem