Ricoh pro c 901 s+ error code sc 436

What OBD fault codes do you or did you have,
when the dash light came on?

Did you not look up those codes & diagnose them?

Changed what sensors & why ?

The only parts that get changed, are the ones that fail a
test & are the cause of a vehicle problem or issue

Hi Sc, The job is labour intensive and may solve the problem. I wonder if the fluid in the tranny has ever been replaced? It's meant to be replaced at least once a year. If it smells burned have it replaced. Ask your shop to check the gearbox and engine mountings and in the event of your vehicle having rear wheel drive, the universal joints on the prop shaft. Regards John

theres more then one o2 sensor the code its throwing tells you which ones bad the code you have is for bank one

It sounds like a bad sensor or a break in the wire to the injector

change the coil pack.

The code refers to an oxygen sensor that is no longer detecting changes in fuel delivery by way of sensing exhaust oxygen content. Bank 1, sensor 1, tells you which sensor is bad, in this case, it's the sensor that is mounted before the catalytic converter, on the rear bank of cylinders as you look into the engine compartment. It would really be a good idea to change both pre-cat O2 sensors at this point as they are both twelve years old.

There are many potential problems that can cause this error code to be generated. The optimum air-fuel mixture is determined by a pre-conceived 'map' that the engine management computer refers to about 10 times per second. It then compares sensor information to the reference values in the map and adjusts the fuel-air mixture accordingly. Therefore, any single factor that can influence the reference information the computer receives from sensors could potentially be the problem. Now, it's a process of elimination / testing. First, start with the vacuum system. Ensure there are no vacuum leaks. Next, make sure all electrical connections and wiring are in good condition AND, especially for volkswagen, make sure the grounding points for the electrical system are all clear of corrosion and grounding nicely. Finally, if the problem is still there, refer to a service manual for your vehicle and use a multi-meter to check sensors such as the mass airflow sensor or manifold absolute pressure sensor, air temperature sensor, throttle position sensor, engine temperature sensor, crankshaft and camshaft position sensor, oxygen sensors, etcetera, for errors. In most cases, if there is a fault in any one of these sensors, it will register an error code, BUT NOT ALWAYS!! If there are no vacuum leaks, the wiring is good, and all sensors spec as functioning appropriately, then you may have a problem with your ECU (although I doubt it's the latter). Good luck, now get to hunting for your problem!

I have an owners manual for a 2001 c70. It lists instructions for models SC-813 SC-816 AND SC-901. Are any of these yours?
If so, I can email you the intructions.

I know I had this same problem with my car three times actually and I had to keep getting the oxygen sensors changed. since there is more than one.