Motronic M 2.8 F2:TROUBLE CODE TABLE
Trouble
| Code |
Information Sensor
| Cause of Fault | Remedy in |
F0:DATA LIST
| No. | |
|---|---|
| Trouble Code Storage when ... | |
| Remarks | |
| 38 | O2 SENSOR |
CIRCUIT VOLTAGE
| LOW | 36, 37, 38, 39, 40 | · Oxygen sensor voltage less than 90 mV for longer than 2.5 s |
(short circuit to ground)
The trouble code is stored if
(conditions must be fulfilled consecutively):
1.) Coolant temperature higher than 70 °C/158 °F
2.) Condition 1.) fulfilled for 3 min
3.) Load signal greater than 1.5 ms
4.) After conditions 1.) to 3.) are fulfilled, waiting period of 5 s elapsed
5.) Trouble code 73 or 74 not recognized
Replacement value:
The control unit takes a replacement value of 450 mV.
The oxygen sensor control is switched off.