Mazda MPV 1999-06

3.0L V6 - Auto 5

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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: P2144



EGR boost sensor solenoid valve circuit low input

Possible Causes:



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

Trouble Code: P2145



EGR boost sensor solenoid valve circuit low input

Possible Causes:



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

Trouble Code: P2177



Fuel system too lean at off idle (right bank)

Possible Causes:



Misfire
 
Exhaust system leak* Fuel pump malfunction
 
Fuel filter clogged
 
PCM has failed
 

Trouble Code: P2178



Fuel system too rich at off idle (right bank)

Possible Causes:



Misfire
 
Exhaust system leak* Fuel pump malfunction
 
Fuel filter clogged
 
PCM has failed
 

Trouble Code: P2179



Fuel system too lean at off idle (left bank)

Possible Causes:



Misfire
 
Exhaust system leak* Fuel pump malfunction
 
Fuel filter clogged
 
PCM has failed
 

Trouble Code: P2180



Fuel system too rich at off idle (left bank)

Possible Causes:



Misfire
 
Exhaust system leak* Fuel pump malfunction
 
Fuel filter clogged
 
PCM has failed
 

Trouble Code: P2187



Fuel system too lean at off idle (right bank)

Possible Causes:



Misfire
 
Exhaust system leak* Fuel pump malfunction
 
Fuel filter clogged
 
PCM has failed
 

Trouble Code: P2188



Fuel system too lean at off idle (left bank)

Possible Causes:



Misfire
 
Exhaust system leak* Fuel pump malfunction
 
Fuel filter clogged
 
PCM has failed
 

Trouble Code: P2189



Fuel system too lean at off idle (left bank)

Possible Causes:



Misfire
 
Exhaust system leak* Fuel pump malfunction
 
Fuel filter clogged
 
PCM has failed
 

Trouble Code: P2190



Fuel system too rich at off idle (left bank)

Possible Causes:



Misfire
 
Exhaust system leak* Fuel pump malfunction
 
Fuel filter clogged
 
PCM has failed
 

Trouble Code: P2196



HO2S (RF) signal stuck rich

Possible Causes:



HO2S (RF, LF) malfunction
 
Exhaust gas leaking* MAF sensor malfunction
 
ECT sensor malfunction
 
PCM has failed
 

Trouble Code: P2197



HO2S (LF) signal stuck lean

Possible Causes:



HO2S (RF, LF) malfunction
 
Exhaust gas leaking* MAF sensor malfunction
 
ECT sensor malfunction
 
PCM has failed
 

Trouble Code: P2198



HO2S (LF) signal stuck rich

Possible Causes:



HO2S (RF, LF) malfunction
 
Exhaust gas leaking* MAF sensor malfunction
 
ECT sensor malfunction
 
PCM has failed
 

Trouble Code: P2227



EGR boost sensor circuit performance problem

Possible Causes:



EGR boost sensor solenoid malfunction
 
Connector or terminal malfunction* 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: 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: P2405



EVAP system leak detection pump sense circuit low input

Possible Causes:



EVAP system leak detection orifice has fallen off
 
EVAP system leak detection pump motor malfunction
 
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: P2502



Charging system voltage problem

Possible Causes:



Open circuits between battery terminals
 
Battery is malfunctioning* Poor connection of PCM connectors
 
Generator malfunction
 
PCM has failed
 

Trouble Code: P2503



Charging system voltage low

Possible Causes:



Open circuits between battery terminals
 
Battery is malfunctioning* Poor connection of PCM connectors
 
Generator 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
 

Trouble Code: U0073



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
A/C System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U0101



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
A/C System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U0121



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
A/C System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U0155



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
A/C System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U0167



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
A/C System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U0302



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
A/C System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U1020



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
A/C System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U1039



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
Vehicle Speed System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U1040



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
Vehicle Speed System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U1051



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
ABS System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U1131



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
Fuel System controller is damaged or has failed
 
PCM has failed
 

 
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