1994 jeep washer sensor replacement - 1994 Jeep Grand Cherokee

That code is for the engine coolant temperature sensor. "...input above maximum acceptable voltage." I would try a new temp. sensor. If that doesn't fix it, you may need to have an engine scanner hooked up, and see what the sensor is sending to the computer, and go from there.
A bad coolant temp. sensor can cause hard starting like your symptoms.
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do you hear your fuel pump kick on when you you turn the key?

clogged muffler at the back of the jeep

Windshield washer fluid sensor, in the washer fluid bottle, is bad.

Washer message? I suggest scanned the PCM in order to know fault codes stored there. Send us this code number for other details.

For windshield washer water level, the sensor is inside thw washer bottle.

CHECK ASD RELAY THAT IS AUTOMATIC SHUTDOWN RELAY IN THE POWER DISTRIBUTION CENTER UNDER THE HOOD IN ENGINE COMPARTMENT.IF ASD RELAY GOOD PROBLEM COULD BE CAMSHAFT SENSOR IN THE DISTRIBUTOR.TO SAVE TIME AND MONEY HAVE JEEP SCANNED FOR CAMSHAFT SENSOR AND CRANKSHAFT SENSOR FAULTS.

Replace the Vehicle speed sensor that is located in the tailshaft housing of the differential case. You will have to index the sensor when installed in order for it to operate correcly.

The problem is one of your coil packs is bad. Don't throw money into sensors, they are false codes. The problem is coil packs.

make sure you have power going to the sensor, no power will not work