Diagnostic trouble code: P0132 “Overvoltage of circuit for upstream oxygen
sensor”
(Note: the following diagnostic procedures are applicable only under the
circumstances that the trouble code of P0135 does not appear simultaneously, in case
that such trouble code appears at the same time overhaul shall be carried out based on
the following procedures after dealing with the malfunction of P0135 firstly.)
Item
No.
Operation procedure
Inspection
results
Follow-up
procedure
1
Connect the diagnostic tester and adaptor,
and turn the ignition switch to “ON”
position.
Proceed to next
step.
Yes
Refer to diagnosis
help.
2
Start up the engine, run at idle speed until
the temperature of coolant reaches the
normal value. Observe the value of
“Oxygen sensor voltage” on the
diagnostic tester to verify that the
indicated value is changed quickly within
the range of 100mV – 900mV.
No
Proceed to next
step.
Yes
Repair and replace
the wiring harness.
3
Verify that the circuits between 36# and
18# pins of ECU and A# (corresponding
to grey connecting wire of the oxygen
sensor) and B# (corresponding to black
connecting wire of the oxygen sensor)
pins of the sensor connector are short to
power supply.
No
Refer to diagnosis
help.