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ELECTRICALS
125
Sr.
No.
Displayed
DTC Code
DTC Description
Fault
cause
Probable trouble Area
48 P0036 - 13
Downstream
oxygen
sensor
heater
control
circuit open
Circuit
open
1) Loose/ damaged connections or intermittent
fault.
2) Sensor supply line short circuit to battery/
ground.
3) Sensor signal line short circuit to battery/
ground.
4) Check the continuity from sensor connector
pins to the ECU pins.
5) Check for back out of pins at both sensor
connector and ECU connector.
6) Check for damage of pins at both sensor
connector and ECU connector.
7) Faulty downstream HO2S2 sensor.
8) Faulty ECU.
49 P0053 - 1B
Upstream oxygen
sensor
heater
resistance
too
high.
Circuit
resistance
above
threshold
1) Loose/ damaged connections or intermittent
fault.
2) Sensor supply line short circuit to battery/
ground.
3) Sensor signal line short circuit to battery/
ground.
4) Check for back out of pins at both sensor
connector and ECU connector.
5) Check for damage of pins at both sensor
connector and ECU connector.
6) Check the continuity from sensor connector
pins to the ECU pins.
7) Faulty HO2S1 sensor.
8) Faulty ECU
50 P0032 - 12
Upstream oxygen
sensor
heater
control short circuit
to battery
Circuit
short
to
battery
1) Loose/ damaged connections or intermittent
fault.
2) Sensor supply line short circuit to battery/
ground.
3) Sensor signal line short circuit to battery/
ground.
4) Check the continuity from sensor connector
pins to the ECU pins.
5) Check for back out of pins at both sensor
connector and ECU connector.
6) Check for damage of pins at both sensor
connector and ECU connector.
7) Faulty upstream HO2S1 sensor.
8) Faulty ECU.