blacky g37

i had some problem when i start up the car the rpm drops down to nearly 200 and sometimes it reaches 0 and the car shuts down i took it to a diag check and it showed the codes: p1815 manu mode sw circ and p1705 tp sen/circ A/T what are those codes and whats the problem do i need to change the sensors ? please help

blacky g37

anyone help with this

myk1013

iTrader: (2)

Have you checked your intake sensors. One side might be loose or disconnected.

blacky g37

its fine if the the sensor is loose i think the cel will show

ifinity

iTrader: (1)

Although you probably have had this problem fixed by now, the 2008 service manual page TM-143:

"p1705 is Description INFOID:0000000001672165
Electric throttle control actuator consists of throttle control motor, accelerator pedal position sensor, throttle
position sensor, etc. The actuator transmits a signal to the ECM, and ECM transmits signals to TCM with CAN
communication.
DTC Logic INFOID:0000000001672166
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
NOTE:
If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch
OFF. Then wait at least 10 seconds before performing the next test.
1.CHECK DTC DETECTION
With CONSULT-III
1. Start the engine and let it idle for 1 second.
2. Perform “SELF-DIAG RESULTS” mode for “TRANSMISSION”.
Is “P1705 TP SEN/CIRC A/T” detected?
YES >> Go to TM-143, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-38, "Intermittent Incident".
Diagnosis Procedure INFOID:0000000001672167
1.CHECK DTC OF ECM
With CONSULT-III
1. Turn ignition switch ON.
2. Perform “SELF-DIAG RESULTS” mode for “ENGINE”.
Is any DTC detected?
YES >> GO TO 2.
NO >> Check DTC detected item. Refer to EC-120, "CONSULT-III Function".
2.CHECK DTC OF TCM
With CONSULT-III
Perform “SELF-DIAG RESULTS” mode for “TRANSMISSION”.
Is any DTC detected?
YES >> GO TO 3.
NO >> Check DTC detected item. Refer to TM-112, "CONSULT-III Function (TRANSMISSION)".
3.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to TM-163, "Diagnosis Procedure".
Is the inspection result normal?
YES >> Replace the control valve with TCM. Refer to TM-232, "Exploded View".
NO >> Repair or replace damaged parts."

p1815 was in another tsb topic about manual mode switch malfunction for going between D and DS.