Mazda Car 2005-06

2.0L L4 - Std 3

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Trouble Code: P2109



TP sensor minimum stop range/performance problem

Possible Causes:



Drive-by-wire control system malfunction
 
Throttle actuator malfunction* Throttle valve malfunction
 
PCM has failed
 

Trouble Code: P2112



TP sensor minimum stop range/performance problem

Possible Causes:



Drive-by-wire control system malfunction
 
Throttle actuator malfunction* Throttle valve malfunction
 
PCM has failed
 

Trouble Code: P2119



TP sensor minimum stop range/performance problem

Possible Causes:



Drive-by-wire control system malfunction
 
Throttle actuator malfunction* Throttle valve malfunction
 
PCM has failed
 

Trouble Code: P2122



APP sensor No. 1 circuit low input

Possible Causes:



Open circuits between APP sensor terminals and PCM terminals
 
Short circuits between APP sensor terminals and PCM terminals* Poor connection of APP sensor or PCM connector
 
APP sensor No. 1 malfunction
 
PCM has failed
 

Trouble Code: P2123



APP sensor No. 1 circuit high input

Possible Causes:



Open circuits between APP sensor terminals and PCM terminals
 
Short circuits between APP sensor terminals and PCM terminals* Poor connection of APP sensor or PCM connector
 
APP sensor No. 1 malfunction
 
PCM has failed
 

Trouble Code: P2126



Throttle Actuator control module performance

Possible Causes:



Open circuits between throttle body terminals and PCM terminals
 
Short circuits between throttle body terminals and PCM terminals* Poor connection of throttle body or PCM connector
 
TP sensor No. 1 or TP sensor No. 2 malfunction
 
PCM has failed
 

Trouble Code: P2127



APP sensor No. 2 circuit low input

Possible Causes:



Open circuits between APP sensor terminals and PCM terminals
 
Short circuits between APP sensor terminals and PCM terminals* Poor connection of APP sensor or PCM connector
 
APP sensor No. 1 malfunction
 
PCM has failed
 

Trouble Code: P2128



APP sensor No. 2 circuit high input

Possible Causes:



Open circuits between APP sensor terminals and PCM terminals
 
Short circuits between APP sensor terminals and PCM terminals* Poor connection of APP sensor or PCM connector
 
APP sensor No. 1 malfunction
 
PCM has failed
 

Trouble Code: P2135



TP sensor No. 1/No. 2 voltage correlation problem

Possible Causes:



TP sensor No. 1 malfunction
 
TP sensor No. 2 malfunction* Poor connection of throttle body or PCM connector
 
PCM has failed
 

Trouble Code: P2138



TP sensor No. 3/No. 4 voltage correlation problem

Possible Causes:



TP sensor No. 3 malfunction
 
TP sensor No. 4 malfunction* Poor connection of throttle body or PCM connector
 
PCM has failed
 

Trouble Code: P2228



EGR boost sensor solenoid valve circuit low input

Possible Causes:



EGR boost sensor solenoid malfunction
 
Connector or terminal malfunction* PCM has failed
 

Trouble Code: P2229



EGR boost sensor solenoid valve circuit high input

Possible Causes:



EGR boost sensor solenoid malfunction
 
Connector or terminal malfunction* PCM has failed
 

Trouble Code: P2270



Rear HO2S signal stuck lean

Possible Causes:



Front or Rear HO2S malfunction
 
Front or Rear HO2S heater malfunction* Fuel pressure malfunction
 
Fuel injector malfunction
 
PCM has failed
 

Trouble Code: P2271



Rear HO2S signal stuck rich

Possible Causes:



Front or Rear HO2S malfunction
 
Front or Rear HO2S heater malfunction* Fuel pressure malfunction
 
Fuel injector malfunction
 
PCM has failed
 

Trouble Code: P2274



Rear HO2S signal stuck lean

Possible Causes:



Front or Rear HO2S malfunction
 
Front or Rear HO2S heater malfunction* Fuel pressure malfunction
 
Fuel injector malfunction
 
PCM has failed
 

Trouble Code: P2275



Rear HO2S signal stuck rich

Possible Causes:



Front or Rear HO2S malfunction
 
Front or Rear HO2S heater malfunction* Fuel pressure malfunction
 
Fuel injector malfunction
 
PCM has failed
 

Trouble Code: P2401



EVAP system leak detection pump motor circuit low

Possible Causes:



EVAP system leak detection pump malfunction
 
Poor connection of EVAP system or PCM connector
 
PCM has failed
 

Trouble Code: P2402



EVAP system leak detection pump motor circuit low

Possible Causes:



EVAP system leak detection pump malfunction
 
Poor connection of EVAP system or PCM connector
 
PCM has failed
 

Trouble Code: P2404



EVAP system leak detection pump sense circuit problem

Possible Causes:



Air filter clogging
 
EVAP hose bending
 
PCM has failed
 

Trouble Code: P2407



EVAP system leak detection pump sense circuit intermittent

Possible Causes:



EVAP system leak detection pump heater malfunction
 
PCM has failed
 

Trouble Code: P2504



Charging system voltage high

Possible Causes:



Short to power circuit between generator and PCM
 
Generator malfunction
 
PCM has failed
 

Trouble Code: P2507



PCM B+ voltage low

Possible Causes:



Melt down fuse* Poor connection of PCM
 
PCM has failed
 

 
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