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ME9 / P2187 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Malfunction Indicator Lamp The engine may stop after starting, run unevenly and misfire or run at high rpm.

  P2187 00


Long Term Fuel Trim Additive. Max Value, Air/Fuel too Lean.

Fault symptom

Malfunction Indicator Lamp

The engine may stop after starting, run unevenly and misfire or run at high rpm.

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

The engine has started and lambda control is active.
An additive adaptation is carried out.
Cooling and intake air temperature 60°C.
Fuel level at least 12%.

Fault criteria:

The additive adaptation factor is greater than 5.25%.

Diagnostic help

Diagnosis regards:

Checking air/fuel ratio. With this DTC, the engine will be getting too much air or too little fuel.
IMPORTANT
A crankcase ventilation leak may be one reason as to why a DTC is set. Check crankcase ventilation function before starting regular troubleshooting.

Functions in the diagnostic tool related to the fault:

Test value:
O2S1 lambda
Additive Adaptation
Short Term Fuel Trim
Purge Adaptation
Airmass Deviation from Calculated
Total Fuel Trim

(See also description of readings/activations in diagnostic tool)