U0140, U0156
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Incorrect engine speed shown.
Incorrect engine temperature shown.
Engine stops or will not start.
No cooling from A/C.
U0140
P-Bus Malfunction
U0156
P-Bus Malfunction
Fault symptoms
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Incorrect engine speed shown.
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Incorrect engine temperature shown.
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Engine stops or will not start.
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Conditions
The following conditions apply for this DTC:
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U0140:
AC pressure from DICE via MIU absent.
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U0156:
Outside temperature from SID via MIU absent.
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Diagnostic help
There may be other trouble codes present that indicate a bus malfunction. Perform fault diagnosis on the bus. Refer to
No contact with any bus system
.
