Emission test perf on time? - 2005 Mercedes-Benz Cl-Class

Have you tested for a signal on coil no1, if no signal it'll be a wiring fault or bad ecm, but the problem could be the valves to that cylinder.

95 Accord is pre-obd 2 and will probably need dedicated Honda diagnostic equipment. There was no requirement at that time to use a standard connector or to place the connector within reach of the driver's seat as with obd 2.

Honda service information should provide more details or for simplicity ask your local Honda dealer to check the emission?

The simplest method would be to check the emissions the old-fashioned way - like it is still done in lots of places, by testing the emissions at the tailpipe with a suitable gasalyser...

YOUR EMS MUST RE LEARN. THIS WILL TAKE 3 TO 5 COLD STARTS AND SOME CITY AND HWY DRIVING

It is suggested that you always start with first code first. not knowing what code came first, and my experience with Dodge. i have found that them symptoms resemble a map,sensor/check vacuum hose and vacuum.

Why aren't they just using the OBD II port instead of the dynomometer? Which state are you in? In Washington, where I work as an emission test specialist, we don't even use the dyne (rollers) to do the test. The OBD II port doesn't require the car to be taken out of park.
If you have to resort to it, just pull the TCS fuse for the test. The TCS won't activate and you won't get any emissions error codes.
Be sure to check with the testing facility before you do this. They may not allow it if it may be considered a safety issue.
I wish you the best!

Hello..
Code 21: Is an oxygen sensor Code 54: Is a crank positioning sensor.
Hope this helps!

Here is the information that you need:

NOTE
Enter this Pinpoint Test only when directed here.

The use of a soap solution, such as SNOOP, around the fuel filler cap or the use of the hydrocarbon emission analyzer to determine an evaporative emission system leak is not recommended. The mandatory Rotunda Evaporative Emission System Leak Tester for OBD II (including the ultra-sonic tester) is the only device to be used at this time for evaporative emission system leak detection.

This Pinpoint Test is intended to diagnose the following:

• Canister Vent (CV) solenoid
• Fuel filler cap
• Fuel Tank Pressure (FTP) sensor
• In-line Fuel Tank Pressure (FTP) sensor
• EVAP canister purge valve
• Harness circuits: CV, FLI, FTP, EVAP Canister Purge Valve, SIG RTN, Vehicle Power (VPWR) , Reference Voltage (VREF) and Power Ground (PWR GND)
• Powertrain Control Module (PCM)

Evaporative Emission (EVAP) Monitor System

po341 is camshaft position sensor A bank 1 ckt range/perf and po122 istps/pedal position sensor A curcuit low input this is throttle position switch on side of throttle body!

po121 means that there is a problem with the throttle position sensor ( tps). or in the wiring or connector, most likely its the tps that is bad. first remove connection from tps, heres how to test. use an ohms meter and hook a lead to top or bottom terminal of tps. use other probe on center terminal of tps. move throttle plate slowly, if the needle on meter does not move at a smooth pace, then tps is bad. good-luck!!

Fix the leak at the emissions system first. There is a small leak that the PCU detected. That could be the cause of the P0116 problem. Also the PCU detected a lean gas mixture because it is getting more air to the fuel system than gasoline. Start with the leak , then the Engine temperature sensor. I think that fixing the lek will "fix' the othe 2 problems. but it could be either one or all of them.