P026A

474D - P026A

Information saved in
DDE

Fault code
474D - P026A

Fault text
DDE: Intercooler, plausibility: Cooler efficiency too low

Fault description
A defective intercooler is recognized when the following
conditions are met:
1. The enable time for debounce of the monitoring signal is
greater than or equal to the limit value 150 s.
2. The calculated intercooler efficiency level is less than a
limit value defined according to current operating
coordinates.

Condition for fault identification
Test condition:
A check runs whenever the enable time is greater than 150 s.
Voltage condition:
A check runs whenever the enable time is greater than 150 s.

Condition for fault memory entry
-

Action in service
The intercooler's effective cooling capacity is too low.
Check air flow to the intercooler. Check cooling fins for
contamination and clean as indicated.
If the air-supply duct is OK and no contamination is present:
Replace intercooler.

Fault effect and breakdown warning
-

Driver information
Warning light:
MIL

Service instruction
If contaminant deposits are discovered on/in the intercooler
then the engine radiator should also be inspected for
contamination.