Chery A18. Manual - part 13
Diagnostic trouble code: P0130 “Malfunction in signal circuit of 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 ground.
No
Proceed to next
step.
Yes
Carry out service
based on the
diagnostic results.
4
A. Verify that there is quite serious leakage
in the air intake system;
B. Verify that there is blockage in the fuel
injector;
C. Verify that the clearance of spark plug is
excessive large;
D. Verify that the resistance of distributor
circuit is excessive large;
E. Verify that the air intake valve conduit is
worn out;
And etc.
No
Refer to diagnosis
help.