T8 / P2187 00
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Fault indicator lamp (for further information see WIS Fault diagnosis, general)
The engine may stop after starting, run unevenly and misfire or run at high rpm.
Long Term Fuel Trim Additive. Max Value, Air/Fuel too Lean.
Fault symptom
Fault indicator lamp (for further information see WIS Fault diagnosis, general)
The engine may stop after starting, run unevenly and misfire or run at high rpm.
On-board diagnosis
Type of diagnosis:
Enable criteria:
| The engine has started and lambda control is active. |
| An additive adaptation is carried out. |
| NONE of the following DTCs must be detected: |
Fault criteria:
| Additive adaptation is +4.00 mg/c. |
Dependent:
System reaction to a fault:
OK report:
| Provided that the fault criteria are not fulfilled during the operating cycle, there is an OK report upon ignition shut-off before the engine stops. Two types of OK reports are possible: Type 1: If there is already a DTC stored for the diagnosis and operating conditions were the same (coolant temperature over or under 71°C, engine speed 375 rpm and load 10%). Type 2: If there is no DTC stored for the diagnosis or if operating conditions were not the same. |
Fault handling:
| (See section Fault handling II, "Emission-related misfiring or fault in fuel system" for more information.) |
Diagnostic help
Diagnosis regards:
| Checking air/fuel ratio. With this DTC, the engine will be getting too much air or too little fuel. |
Functions in the diagnostic tool related to the fault:
| • | Airmass Deviation from Calculated |
| (See also description of readings/activations in diagnostic tool) |
