447 – HIHI P-Charge Mix Diff.
ZKP-Number:
Red alarm. Engine shutdown.
Associated parameter 2.0183.932
Cause
Corrective action
Difference in mixture pressures
sensed on A and B side is too high
(limit value 2).
1. Check throttles for varying positions and malfunction.
2. Check mixture lines for leakage.
3. Check sensors and cabling (B79.22, B79.21).
451 – HI T-Charge Mix
ZKP-Number:
Yellow alarm.
Associated parameter 2.0169.931
Cause
Corrective action
Mixture temperature is too high
(limit value 1). Mixture coolant
pump failure, volumetric flow too
low, cooling system inlet
temperature too high, mixture
cooler clogged.
1. Check mixture cooling circuit.
2. Check mixture cooler for dirt.
452 – HIHI T-Charge Mix
ZKP-Number:
Red alarm. Engine shutdown.
Associated parameter 2.0169.932
Cause
Corrective action
Mixture temperature is too high
(limit value 2). Mixture coolant
pump failure, volumetric flow too
low, cooling system inlet
temperature too high, mixture
cooler clogged.
1. Check mixture cooling circuit.
2. Check mixture cooler for dirt.
453 – LO T-Charge Mix
ZKP-Number:
Yellow alarm.
Associated parameter 2.0169.921
Cause
Corrective action
Mixture temperature is too low
(limit value 3).
1. Check intake air temperature.
2. Check mixture cooling circuit.
130 | Troubleshooting | MS150034/04E 2016-11
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