Chery Tiggo 5 (T21). Manual - part 47

06–

30

06

10

Check ignition switch assembly (

See page 15-67

)

Replace ignition switch assembly

Repair or replace engine compartment fuse and relay box or wire harness (engine compartment fuse 
and relay box - ignition switch)

NG

OK

06–

31

06

SQR484F ENGINE MANAGEMENT SYSTEM

DTC

P0030-00 O2 Sensor Heater Contr. Circ. (Bank1 (1) Sensor 1)

DTC

P0031-00 O2 Sensor Heater Contr. Circ. (Bank1 (1) Sensor 1) Low

DTC

P0032-00 O2 Sensor Heater Contr. Circ. (Bank1 (1) Sensor 1) High

DTC

P0053-00 O2 Sensor Heater Resistance (Bank1 (1) Sensor 1)

06–

32

06

ET21065002

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

RL

YL

GL

86

87

85

30

1-40

1-9

3

1-16

1

4

2

UPSTREAM 
OXYGEN 
SENSOR

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

1

2

3

4

Gr

E-076

W

E-069

E-084

B

E-084

E-076

E-069

B

E-033

B

E-035

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

ECM-1

E-033

E-035

37 38 39 40 41 42 43 44 45 46

47

48

25 26 27 28 29 30 31 32 33 34

35

36

13 14 15 16 17 18 19 20 21 22

23

24

1

2

3

4

5

6

7

8

9 10

11

12

06–

33

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

P0030-00

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

Ignition switch ON 
Engine running

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

P0031-00

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

P0032-00

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

P0053-00

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

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