LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Suzuki >> 1990 >> Swift GLX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Diagnostic Trouble Code Definitions
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Trouble Code Definitions

DIAGNOSTIC TROUBLE CODE DEFINITIONS (DOHC)

DTC Description
12 System Normal
13  Oxygen Sensor Circuit
14  Coolant Temp Sensor (CTS) Indication Low
15  Coolant Temp Sensor (CTS) Indication High
21  Throttle Position Sensor Voltage High
22  Throttle Position Sensor Voltage Low
24  Speed Sensor Circuit Check (DOHC)
33  Airflow Sensor (AFS) CKT Signal Voltage High
34  Airflow Sensor (AFS) CKT Signal Voltage Low
41  No Ignition Signal
42  Crank Angle Sensor (CAS) Circuit Check
51 (1) EGR System Circuit Check
52 (1) Fuel Injector Check
(1) Applicable to California models only.
DIAGNOSTIC TROUBLE CODE DEFINITIONS (SOHC)

CODE Description
12 System Normal
13  Oxygen Sensor Circuit
14  Coolant Temp Sensor (CTS) Indication Low
15  Coolant Temp Sensor (CTS) Indication High
21  Throttle Switch - M/T
21  Throttle Position Sensor Voltage High - A/T
22  Throttle Position Sensor Voltage Low - A/T
23  Air Temp Sensor (ATS) Signal Voltage High
24  Speed Sensor Circuit Check
25  Air Temp Sensor (ATS) Signal Voltage Low
31  Pressure Sensor (PS) Signal Voltage Low
32  Pressure Sensor (PS) Signal Voltage High
41  No Ignition Signal
51 (1) EGR System Circuit Check
(1) Applicable to California models only.