Suzuki Swift & Geo Metro: Diagnostic Trouble Codes
 
 
NOTE: This information does not apply to carberated engines, as they will
  not have a check engine light and no codes are retrievable. Diagnostic
  Trouble Codes (DTC) may be accessed by installing a spare fuse into the fuse
box  diagnostic terminal, located under the LH side of the instrument panel,
then  turning the ignition On.


Reading trouble codes
The instrument panel Check Engine lamp displays the DTCs. In normal operation
  the lamp will light when the ignition is turned On. However, two different lamp
  functions can occur when the engine is started. The lamp may turn off
  immediately, indicating there is no fault at that time, or stay lit, informing
  the vehicle operator that there is a system failure. If the lamp stays lit a
DTC  will be stored in the ECM memory. When a DTC is accessed from the ECM
memory the  Check Engine lamp will flash in a series, indicating the DTC number.
When  multiple system failures occur applicable DTCs will be indicated three
times  each. DTCs will continue to flash as long as the ignition is On, and the
  diagnostic switch terminals are grounded.


Clearing Codes
DTCs may be erased by disconnecting and isolating the battery ground cable
  for more than 60 seconds, or after 50 key cycles if the malfunction has not
  recurred.


On models with OBD II, the DTCs may be cleared with the scan tool, following
  the tool manufacturer’s instructions.







86–95 w/TBI FUEL INJ (3cyl)

86–95 w/MULTI-POINT FUEL INJ (4cyl)
                       
(FYI most code 13's are bad fuel pumps so check the fuel pump pressure and volume)  a good rule of thumb is at idle if you remove the return line from the throttle body it should have a fairly large volume of fuel returning to the tank. This would be the extra fuel you would be using if the engine were running at full throttle. The code is for the O2 sensor but its really saying the O2 sensor is reading incorrectly. O2 failures are very rare on 1 wire systems. 


codes are listed number first then circuit below it.
 
13



O2S Circuit



13



O2S Circuit




14



ECT Sensor Circuit



14



ECT Sensor Circuit




15



ECT Sensor Circuit



15



ECT Sensor Circuit




21



TP Sensor Circuit Signal Voltage High



21



TP Sensor Circuit




22



TP Sensor Circuit Signal Voltage Low



22



TP Sensor Circuit




23



IAT Sensor Circuit



24



Speed Sensor Circuit




24



VSS Circuit



33



Air Flow Sensor Circuit




25



IAT Sensor Circuit



34



Air Flow Sensor Circuit




31



Pressure Sensor Circuit



41



Ignition Signal Circuit




32



Pressure Sensor Circuit



42



Crank Angle Sensor Circuit




41



Ignition Fail-Safe Signal Circuit



51



EGR System & Recirculated Exhaust Gas Temperature Sensor Circuit





42



Crank Angle Sensor Circuit



52



Fuel Injector, California




51



EGR System & REGT Sensor Circuit
_________________________________________________________________________________________________-

96–00 SWIFT






P0106



MAP Circuit Performance Problem






P0107



MAP Circuit Voltage Low






P0108



MAP Circuit Voltage High






P0111



IAT Circuit Range/Performance Problem






P0112



IAT Circuit Voltage Low






P0113



IAT Circuit Voltage High






P0116



Engine Coolant Temperature Circuit Range/Performance Problem






P0117



ECT Circuit Voltage Low






P0118



ECT Circuit Voltage High






P0121



TP Sensor Circuit Range/Performance Problem






P0122



TP Sensor Circuit Voltage Low






P0123



TP Sensor Circuit Voltage High






P0125

Insufficient Coolant Temperature For Closed Loop Fuel Control






P0131



HO2S 1 Circuit Voltage Low






P0132



HO2S 1 Circuit Voltage High






P0133



HO2S 1 Circuit Slow Response






P0134



HO2S 1 Circuit No Activity Detected






P0135



HO2S 1 Heater Circuit Malfunction






P0136



HO2S 2 Circuit Malfunction






P0141



HO2S 2 Heater Circuit Malfunction






P0171



Fuel System Too Lean






P0172



Fuel System Too Rich






P0300



Misfire Detected






P0301–P0304



Misfire Cylinders 1–4






P0335



CKP Sensor Circuit Malfunction






P0340



CMP Sensor Circuit Malfunction






P0400



EGR Flow Malfunction






P0420



Catalyst System Efficiency Below Threshold






P0440



EVAP System Malfunction/Gross Leak Detected






P0443



EVAP System Purge Control Valve Circuit Malfunction






P0450



EVAP System Pressure Sensor Malfunction






P0451



EVAP System Pressure Sensor Performance






P0455



EVAP System Malfunction, Large Leak Detected






P0461



Fuel Level Sensor Circuit Performance Problem






P0463



Fuel Level Sensor Circuit Voltage High






P0480



Radiator Fan Control System Malfunction






P0500



VSS Malfunction






P0505



ISC System Malfunction






P0506



ISC System RPM Lower Than Expected






P0507



ISC System RPM Higher Than Expected






P0510



CTP Switch Malfunction






P0601



Internal Control Module Memory Checksum Error






P0603



Internal Control Module KAM Error






P0705



Transmission Range Sensor Circuit Malfunction (A/T)






P0720



OSS Circuit Malfunction (A/T)






P0751



Shift Solenoid ‘‘A’’ (No. 1) Performance Or Stuck Open






P0753



Shift Solenoid ‘‘A’’ (No. 1) Electrical (A/T)






P0756



Shift Solenoid ‘‘B’’ (No. 2) Performance Or Stuck Open






P0758



Shift Solenoid ‘‘B’’ (No. 2) Electrical (A/T)






P1250



EFE Heater Circuit Malfunction






P1410



Fuel Tank Pressure Control System Malfunction






P1450



BARO Sensor Voltage High/Low






P1451



BARO Sensor Performance Problem






P1460



Radiator Cooling Fan Control System Malfunction






P1500



Engine Starter Signal Circuit Malfunction






P1510



ECM Back-Up Power Supply Malfunction






P1530



Ignition Timing Adjustment Switch Circuit Malfunction