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CAPONORD 1200
•
shorted to positive: with key set to ON, disconnect the sensor connector and measure PIN
1 voltage on the cable harness side (grey cable): if there is voltage (5 or 12 V), restore the
cable harness; if there is not, replace the lambda probe.
Rear lambda probe P0136
•
shorted to positive
Error cause
•
Excessive voltage (battery voltage) has been detected at PIN 9 and 38 of the ENGINE
connector. Caution: the 'Oxygen sensor' parameter is not the real value that is read; a re-
covery value is displayed instead. The instrument panel does not indicate the presence of
this error even in the ATT status.
Troubleshooting
•
shorted to positive: with key set to ON, disconnect the sensor connector and measure PIN
1 voltage on the cable harness side (orange cable): if there is voltage (5 or 12 V), restore
the cable harness; if there is not, replace the lambda probe.
Front lambda probe heating P0135
•
short circuit to positive/ open circuit, short circuit to negative
Error cause
•
If shorted to positive: excessive voltage has been detected at PIN 32 of the ENGINE con-
nector. If the circuit is open, shorted to negative: voltage equal to zero has been detected
at PIN 32 of the ENGINE connector. The instrument panel does not indicate the presence
of this error even in the ATT status.
Troubleshooting
•
If shorted to positive: disconnect the probe connector and check the correct resistance of
the sensor: if not OK, replace the sensor; if OK restore the cable harness (green/red cable).
•
If circuit is open, shorted to negative: check circuit continuity from probe connector (PIN 3
and 4) toward the probe: if it is not OK, replace the probe; if it is OK, check the sensor
connector and the Marelli control unit connector: if it is not OK, restore; if it is OK, with key
set to ON and sensor connector disconnected, check if there is battery voltage at PIN 4: if
it is not OK, check the Red/Brown cable continuity between the probe connector and the
auxiliary injection relay (No. 46 in the wiring diagram, placed in the front relay box, left side;
CHECK, however, the identification of the relay with the colour of the cables). If there are
also coil, lower and upper injector and secondary air errors, check the relay and its excitation
and power line; if there is voltage at PIN 4, check the Green/Red cable ground insulation
(PIN 3): if not OK, restore the cable harness. If it is OK, check the continuity of the Green/
Red cable (between the sensor connector PIN 3 and the ENGINE PIN 32) and restore the
cable harness.
Rear lambda probe heating P0141
Electrical system
ELE SYS - 133
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