Mazda Car 2002-04

2.3L L4 - Std 4

Print

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: P2676



Variable Air Duct (VAD) control solenoid valve circuit low input

Possible Causes:



Open circuits between main relay and VAD terminals
 
Short circuits between VAD terminals and PCM terminals* Poor connection of PCM connector
 
VAD solenoid valve malfunction
 
PCM has failed
 

Trouble Code: P2677



Variable Air Duct (VAD) control solenoid valve circuit high input

Possible Causes:



Open circuits between main relay and VAD terminals
 
Short circuits between VAD terminals and PCM terminals* Poor connection of PCM connector
 
VAD solenoid valve malfunction
 
PCM has failed
 

Trouble Code: P0016



CKP-CPM correlation

Possible Causes:



Poor connection of connector
 
CMP sensor malfunction
 
CKP sensor malfunction
 
Damaged or foreign material on CKP or CMP sensor
 
Improper valve timing
 

Trouble Code: P0100



MAF or VAF Sensor Circuit Malfunction

Possible Causes:



MAF sensor signal circuit is open or shorted to ground
 
MAF sensor power circuit is open or the ground circuit is open
 
MAF sensor is damaged or has failed
 
PCM has failed
 
TSB SSP056 (2/02) contains a MAF sensor warranty (Protégé)
 

Trouble Code: P0139



Middle HO2S Circuit problem

Possible Causes:



Middle HO2S circuit deterioration
 
Middle HO2S circuit malfunction
 
PCM has failed
 

Trouble Code: P0140



HO2S-12 (Bank 1 Sensor 2) Circuit No Activity Detected

Possible Causes:



Air leaks in the intake manifold or exhaust manifold or pipes
 
IAT sensor or MAF sensor has deteriorated (out of calibration)
 
HO2S signal circuit is open or shorted to ground
 
HO2S contaminated with wrong fuel, has deteriorated or failed
 
TSB 0100700 (3/00) contains information for this code ()
 

Trouble Code: P0145



Rear HO2S Circuit problem

Possible Causes:



Rear HO2S malfunction
 
Rear HO2S contaminated due to wrong fuel, or it has deteriorated
 
PCM has failed
 

Trouble Code: P0171



Adaptive Fuel Trim Too Lean (Bank 1)

Possible Causes:



Air leaks after the MAF sensor, or in the PCV or EGR system
 
Base engine -mechanical- fault affecting one or more cylinders
 
Exhaust leaks before or near where the front HO2S is mounted
 
Fuel control sensor out of calibration (i.e., ECT, IAT or MAF)
 
Fuel delivery system supplying too much or too little fuel during idle or cruise speed (weak fuel pump, weak pressure regulator)
 
Fuel Injectors (one or more) is dirty, restricted or leaking fuel
 
HO2S is contaminated, deteriorated or it has failed
 
Vehicle driven low on fuel or driven until it ran out of fuel
 

Trouble Code: P0443



EVAP Purge Solenoid Circuit Malfunction

Possible Causes:



VMV solenoid control circuit is open or shorted to ground
 
VMV solenoid control circuit is shorted to system power (B+)
 
VMV solenoid power circuit is open or shorted to ground
 
VMV solenoid is damaged or has failed
 
PCM has failed (the VMV solenoid driver may be damaged)
 

Trouble Code: P0638



Throttle Actuator Control Range Performance

Possible Causes:



PCM internal malfunction* Throttle Body malfunction
 

Trouble Code: P1260



Anti-Theft System Signal Detected, Engine Disabled

Possible Causes:



Previous theft condition has occurred
 
Anti-Theft System is damaged or has failed
 

Trouble Code: P2004



Variable Tumble Control System (VTCS) shutter valve stuck open

Possible Causes:



VTCS shutter valve malfunction (stuck open)
 
Misconnecting or pull out the vacuum hose
 
Variable tumble control valve malfunction
 
PCM has failed
 

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: 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: P2507



PCM B+ voltage low

Possible Causes:



Melt down fuse
 
Poor connection of PCM
 
PCM has failed
 

Trouble Code: P2676



Variable Air Duct (VAD) control solenoid valve circuit low input

Possible Causes:



Open circuits between main relay and VAD terminals
 
Short circuits between VAD terminals and PCM terminals
 
Poor connection of PCM connector
 
VAD solenoid valve malfunction
 
PCM has failed
 

Trouble Code: P2677



Variable Air Duct (VAD) control solenoid valve circuit high input

Possible Causes:



Open circuits between main relay and VAD terminals
 
Short circuits between VAD terminals and PCM terminals
 
Poor connection of PCM connector
 
VAD solenoid valve malfunction
 
PCM has failed
 

 
label.common.footer.alt.autozoneLogo