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ELECTRICALS
124
Sr.
No.
Displayed
DTC Code
DTC Description
Fault
cause
Probable trouble Area
45 P0054 - 1B
Downstream
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 or ECU.
46 P0038 - 12
HO2S2
heater
control circuit(bank
1 sensor 2) -
circuit short 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 downstream HO2S2 sensor or ECU.
47 P0037 - 11
Downstream
oxygen
sensor
heater
control
short circuit to
ground
Circuit
short
to
ground
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 or ECU.