P15E5

20A202 - P15E5

Information saved in
DME

Fault code
20A202 - P15E5

Fault text
Coolant pump for intercooler, power-reduced operation:
Undervoltage

Fault description
The diagnostic function monitors the voltage of the
intercooler water pump.

Condition for fault identification
Test condition:
The fault is recognized when the voltage at the intercooler's
water pump is below 10 V.
Potential problem source(s):
- Systematic fault in vehicle, related to battery condition,
etc.
- Intercooler water pump defective
Terminal condition: none
Voltage condition:
- Electrical system voltage > 10 V
Temperature condition:
- None
Time condition:
- None
Other conditions:
- Engine on
- No faults should be present on the LIN bus

Condition for fault memory entry
This fault is logged in the control module's fault memory if
it remains present for longer than 10 sec.

Action in service
- If the 'undervoltage' diagnostic fault code is stored in
several control modules, this relates to a systematic fault in
the vehicle (such as unsatisfactory battery condition). Carry
out the following test module (ABL): Energy diagnosis.
- If only the diagnostic fault code for the intercooler water
pump is stored then the problem lies with the power-supply
voltage
- Replace intercooler water pump

Fault effect and breakdown warning
Breakdown notice:
- none
Possible apparent symptoms:
- Reduced power

Driver information
Warning light:
- ECE emissions warning lamp: off
- US emissions warning lamp: off
- ECE electronic engine power reduction: off
- US electronic engine power reduction: off
- CC message: none

Service instruction
- Excessive intake-air temperatures produce loss of power