smart OBD code listings - 451 model

[gshapow]

I just got Codes P2121 and P2138. Anyone have any idea what they are?

[chumly]

I just got a check engine light ,according to scan gage,I got codes( u0002 High speed CAN communication bus(+)open).Also code u0146(Lost communication with Gateway "A").Does anybody have any idea where or what to look for ? Out of warranty, need to do this myself if possible.

[chumly]

Originally Posted by chumly

I just got a check engine light ,according to scan gage,I got codes( u0002 High speed CAN communication bus(+)open).Also code u0146(Lost communication with Gateway "A").Does anybody have any idea where or what to look for ? Out of warranty, need to do this myself if possible.

Well, I had just restarted the car and the light went out.I changed the scangage to check voltage and it was acting weird .I drove it around and the voltage is going up and down from 14.2 to 13.5.After turning off the heater fan it seemed to straighten out .Last week the fan wasn't working but after removing and spinning it,it started to work and has worked normal ever since.It was still working o.k.when this happened, but when I turned it on with the engine off ,the voltage dropped to 12.5 which still seemed normal.Any ideas? At least if it is the fan motor ,it is easy to change but the motor shouldn't go bad that soon (25000 mi.) ,just after warranty expires.

[jwight]

Originally Posted by gshapow

I just got Codes P2121 and P2138. Anyone have any idea what they are?

Google shows P2121 Throttle/Pedal Position Sensor/Switch “D” Circuit and P2138 Throttle/Pedal Position Sensor/Switch "D"/"E" Voltage Correlation. Assume that is valid for the smart 451s.

[tjsean0308]

from the scan gauge website P0915 Gear Shift Position Circuit Range/Performance I have this code right now. Waiting on the dealer to call me back...GRRR.. I have a trip I need to leave on in a couple hours. Can anyone confirm this as the correct description for this code?

[wahi]

(reposted in new thread)

[peterapache]

I got some from 452, transmission area;
P203B - Actual position sensor of incremental sensor and turning angle sensor.
P2031 - Transmission; Incremental sensor.
P2035 - Turning angle sensor adaption.
Any one can help please?

[ricks auto]

got a code po 455, can any one tell me where the purge valve is located, is it on top of the fuel tank?

[chieftmc]

Originally Posted by ricks auto

got a code po 455, can any one tell me where the purge valve is located, is it on top of the fuel tank?

What year?

[ricks auto]

sorry, 2005, 451 SERIES, MERCEDES MOTOR, THERE IS A VALVE ON THE CARBON CANISTER AND A VALVE ON THE LEFT REAR CORNER OF FUEL TANK, ARE EITHER OF THESE IT? THE DIAGRAM ON THE CAR DOESNT SHOW ME SQUAT