Chery Tiggo 5 (T21). Manual - part 49

06–

38

06

DTC

P0036-00 O2 Sensor Heater Contr. Circ. (Bank1 (1) Sensor 2)

DTC

P0037-00 O2 Sensor Heater Contr. Circ. (Bank1 (1) Sensor 2) Low

DTC

P0038-00 O2 Sensor Heater Contr. Circ. (Bank1 (1) Sensor 2) High

DTC

P0054-00 O2 Sensor Heater Resistance (Bank1 (1) Sensor 2)

06–

39

06

ET21065003

BATTERY

ECM
MAIN 
RELAY

10A

EF19

10A

EF17

10A

EF40

10A

EF39

A2

F14

2-20

RL

A4

2-35

L

2-5

Br

A6

A7

2-15

2-16

RR

R

R

86

87

85

30

3

1

4

2

ENGINE 
COMPARTMENT 
FUSE AND 
RELAY BOX

IGNITION SWITCH
    ON OR START

A1

A2

A3

A4

A5

A6

A7

A8 A9 A10

F12

F24

F11

F23

F10

F22

F9

F21

F8

F20

F7

F19

F6

F18

F5

F17

F4

F16

F3

F15

F2

F14

F1

F13

Gr

E-076

W

E-069

E-076

E-069

B

E-033

49 50 51

63

64

15

16

31

32

47

48

33 34 35

17 18 19

1

2

3

52 53 54 55 56 57 58 59 60 61 62

36 37 38 39 40 41 42 43 44 45 46

20 21 22 23 24 25 26 27 28 29 30

4

5

6

7

8

9 10 11 12 13 14

ECM-2

E-033

2-21

WG

YL

GW

2-48

2-43

DOWN-
STREAM 
OXYGEN 
SENSOR

E-043

1

2

3

4

B

E-043

06–

40

06

DTC Confirmation Procedure

Confirm that battery voltage is over 12 V before performing the following procedures.
 Turn ignition switch to LOCK.
 Connect X-431 3G diagnostic tester (the latest software) to Data Link Connector (DLC).
 Turn ignition switch to ON.
 Use X-431 3G diagnostic tester to record and clear the DTCs stored in the ECM.
 Start the engine and warm it up to normal operating temperature, and then select Read Code.
 If the DTC is detected, the malfunction indicated by the DTC is current. Go to the diagnosis 

procedure - Step 1.

 If DTC is not detected, the malfunction indicated by the DTC is intermittent (

See page 06-18

).

Diagnosis Procedure

a. Turn ignition switch to LOCK.
b. Check ECM grounds E-026 and E-028 (

See page 06-18

). 

DTC Code

DTC Definition

DTC Detection 

Condition

Possible Cause

P0036-00

O2 Sensor Heater 
Contr. Circ. (Bank1 (1) 
Sensor 2)

Ignition switch ON 
Engine running

 Downstream oxygen sensor
 Wire harness or connector
 Fuse
 ECM

P0037-00

O2 Sensor Heater 
Contr. Circ. (Bank1 (1) 
Sensor 2) Low

P0038-00

O2 Sensor Heater 
Contr. Circ. (Bank1 (1) 
Sensor 2) High

P0054-00

O2 Sensor Heater 
Resistance (Bank1 (1) 
Sensor 2)

CAUTION

 When performing circuit diagnosis and test, always refer to the circuit diagram for specific circuit and 

component information.

1

Check ECM ground point

Repair or replace ground wire harness or 
ground point

NG

OK

06–

41

06

a. Disconnect downstream oxygen sensor connector.
b. Check downstream oxygen sensor connector.

a. Turn ignition switch to ON.
b. Check voltage between terminal 4 of downstream oxygen 

sensor connector E-043 and body ground. 

2

Check downstream oxygen sensor connector

RT21060040

Repair or replace connector

NG

3

Check downstream oxygen sensor heater power supply voltage

OK

E-043

1

2

3

4

-

+

V

RT21065011

Multimeter 

Connection

Condition

Specified 

Condition

E-043 (4) - Body 

ground

Ignition switch ON

11 to 14 V

Go to step 5

OK

NG