P3022

4258 - P3022

Information saved in
DDE

Fault code
4258 - P3022

Fault text
DDE: DDE control unit internal: implausible values in SPI
chip (lambda signal evaluation)

Fault description
Oxygen sensor chip diagnosis. The diagnostic trouble code
is logged in the ECU when the value read from the chip's
initialization register varies from the value written to the
chip in the previous time interval.

Condition for fault identification
Test condition:
Check frequency is continuous in accordance with the
programmed time grid.
Voltage condition:
Check frequency is continuous in accordance with the
programmed time grid.

Condition for fault memory entry
No debouncing.none

Action in service
Replace DDE control module.

Fault effect and breakdown warning
-

Driver information
Warning light:
MIL

Service instruction
none