So, my wife and I bought a 1990 300ce. The check engine light is on so I did the whole self diagnosis process and the LED flashed 16 times for the first code, and 17 times for the second. I tried to look up the codes on Mitchell On Demand 5 at work and it only listed 10 possible codes. I haven't gotten a repair manual for the car yet, so I have no other information on it except what limited info On Demand has. If anyone has any input I'd really appreciate it.

Thanks,
Dan

 

Dan does your ce have the m103 motor?

 

The car is a 1990 so it has the 24valve m104 motor, sorry I forgot to mention that.

 

1 No faults.
2 Oxygen sensor inoperative.
3 Lambda control inoperative.
4 Air injection inoperative.
5 EGR inoperative.
6 Idle speed control inoperative.
7 Ignition system failure.
8 Coolant temp sensor-open or short circuit.
9 Intake air temp sensor-open or short circuit.
10 Voltage at Air Mass sensor too high or low.
11 TN (RPM) signal defective.
12 Oxygen sensor heater open or short circuit.
13 Cam position sensor signal from-EZL/AKR ign. control unit defective.
14 Intake manifold pressure at start too low.
15 Full throttle Info defective.
16 Idle speed info defective.
17 CAN Data exchange-Malfunction between control units.
18 Adjustable camshaft timing solenoid-open or short circuit.
19 Fuel injectors-open or short circuit or Emission control system adaptation at limit.
20 Speed signal missing.
21 Purge switchover valve-open or shorted.
22 cam position sensor signal defective.
23 Intake manifold pressure w/ engine running too low.
24 Starter ring gear segments defective.
25 Knock sensors.
26 Upshift delay switch over valve-open or shorted.
27 Coolant temp sensor deviation between sensor ciruits 1 & 2.
28 Coolant temp Sensor.

 

Hey Jorge,

Would you happen to have the codes for a 1990 300E with the 103 engine. Mine gets a 11 code.

TIA
Michael

 

m103 Code 11 - Air Injection System.

 

Would that mean a bad "smog pump"?

TIA

Michael

 

or air pump.

 

i'd get it checked out by your indy mech. before you start buying random items. But at least you know where to look. I had the same code come up, decided to randomly replace the o2 sensor since it dealt with air, haha, and the light went away. I don't recommend it though.