Mazda Car 2002-04

2.0L L4 - Std 5

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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: P0144



HO2S-13 (Bank 1 Sensor 3) Circuit Malfunction

Possible Causes:



HO2S signal circuit is shorted to system power (heater circuit) at the connector or somewhere in the wiring harness
 
HO2S contaminated due to wrong fuel, or it has deteriorated
 
PCM has failed
 

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: P0222



TP Sensor No. 2 circuit high input

Possible Causes:



TP Sensor malfunction
 
Connector or Terminal Malfunction
 
Open circuit between throttle body terminal A and PCM terminal 3M
 
Open circuit between throttle body terminal E and PCM terminal 3N
 

Trouble Code: P0223



TP Sensor No. 2 circuit low input

Possible Causes:



TP Sensor malfunction
 
Connector or Terminal Malfunction
 
Open circuit between throttle body terminal D and PCM terminal 3K
 
Open circuit between throttle body terminal C and PCM terminal 3J
 

Trouble Code: P0327



Knock Sensor Circuit Low Input

Possible Causes:



Knock sensor signal circuit is shorted to ground
 
Knock sensor is damaged or has failed
 
PCM is damaged
 

Trouble Code: P0328



Knock Sensor Circuit High Input

Possible Causes:



Knock sensor signal circuit is open
 
Knock sensor signal circuit is shorted to VREF or system power
 
Knock sensor is damaged or has failed
 
PCM is damaged
 

Trouble Code: P0340



Camshaft Position Sensor Circuit Malfunction

Possible Causes:



CMP sensor signal is open or shorted to ground
 
CMP sensor signal is shorted to VREF or system power (B+)
 
CMP sensor is damaged, or the sensor signal shielding is open
 
PCM has failed
 

Trouble Code: P0403



EGR Valve (stepper motor) malfunction

Possible Causes:



EGR valve malfunction
 
Connector or terminal malfunction
 
Short to power circuit in wiring to EGR valve terminals and PCM terminals
 
Open circuit in wiring between EGR valve terminals and PCM terminals
 
PCM has failed
 

Trouble Code: P0441



EVAP System Malfunction

Possible Causes:



EVAP purge solenoid is damaged or has failed
 
EVAP charcoal canister is loaded with fuel or moisture
 
Vapor line is damaged or restricted between the purge solenoid and intake manifold, or between check valve and vapor valve
 
PCM has failed
 

Trouble Code: P0442



EVAP System Small Leak (0.040-) Detected

Possible Causes:



Fuel filler cap loose, cross-threaded, incorrect part or damaged
 
Purge solenoid valve is damaged or has failed
 
Charcoal canister is loaded with fuel or moisture
 
Canister drain cut valve (CDCV) is damaged or has failed
 
Rollover valve, catch tank valve or fuel tank damaged/ leaking
 
Fuel tank pressure sensor is damaged or has failed
 
ECT, IAT, MAF, VSS or TP sensor signals out-of-calibration
 
Vapor line(s) damaged or leaking between the purge solenoid and the intake manifold, EVAP purge solenoid valve and the canister, canister drain cut valve and the rollover valve
 
PCM has failed
 

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: P0446



EVAP System Vent Control Malfunction

Possible Causes:



Canister drain cut valve (CDCV) is damaged, sticking or failed
 
Tank pressure control valve (TPCV) is damaged or has failed
 
Charcoal canister is loaded with fuel or moisture
 
Air filter is severely restricted, or 2-way check valve is clogged
 
FTP sensor signal circuit is open, shorted to ground or to power
 
FTP sensor power circuit is open or shorted to ground
 
FTP sensor is damaged or has failed
 
BARO, ECT, IAT, MAF, VSS or TP sensor is out-of-calibration
 
Fuel tank level sensor is damaged or out-of-calibration
 
Fuel vapor line(s) kinked or blocked between the CDVC valve and intake manifold, or between the TPCV and the canister
 

Trouble Code: P0455



EVAP System Large Leak (0.080-) Detected

Possible Causes:



Fuel filler cap loose, cross-threaded, incorrect part or damaged
 
Purge solenoid valve is damaged or has failed
 
Charcoal canister is loaded with fuel or moisture, or has failed
 
Canister drain cut valve (CDCV) is damaged or leaking
 
Fuel tank pressure (FTP) sensor is damaged or has failed
 
Catch tank or rollover valve is damaged, or fuel tank is leaking
 
Vapor line(s) damaged or leaking between the purge solenoid and intake manifold, purge solenoid and canister, or between the pressure control valve, check valve and rollover valve
 
PCM has failed
 

Trouble Code: P0456



EVAP System Small Leak (0.020-) Detected

Possible Causes:



Fuel filler cap loose, cross-threaded, incorrect part or damaged
 
Small holes or cuts in any of the vapor hoses and/or tubes
 
CV solenoid stuck part-way open while it is commanded closed
 
EVAP system component seals leaking at the purge valve, FTP sensor, CV solenoid, fuel vapor control valve or vapor vent tube
 
Fuel vapor hose or tube connections loose at the component
 
PCM has failed
 

Trouble Code: P0461



Fuel Tank Level Sensor Circuit Range/Performance

Possible Causes:



Fuel gauge sending unit is damaged or has failed
 
Fuel gauge sending unit signal is open or shorted to ground
 
Fuel gauge sending unit power circuit is open
 
Instrument cluster is damaged or has failed
 
PCM has failed
 

Trouble Code: P0505



Idle Speed Control System Malfunction

Possible Causes:



Throttle body is damaged, dirty or idle speed out of adjustment
 
High resistance between PCM and IAC valve control circuits
 
IAC valve circuits open, shorted to ground or shorted to power
 
IAC valve air inlet is plugged, dirty or restricted
 
IAC valve is damaged or has failed
 

Trouble Code: P0564



Cruise Control Switch Circuit Malfunction

Possible Causes:



Cruise control switch malfunction
 
Connector or terminal malfunction
 
Short to power circuit in wiring from cruise control terminal B and PCM terminal 3P.
 
Short to ground circuit in wiring from cruise control terminal B and PCM terminal 3P
 
PCM has failed
 

Trouble Code: P0571



Cruise Control Switch Circuit Malfunction

Possible Causes:



Cruise control switch malfunction
 
Connector or terminal malfunction
 
Short to power circuit in wiring from cruise control terminal B and PCM terminal 3P.
 
Short to ground circuit in wiring from cruise control terminal B and PCM terminal 3P
 
PCM has failed
 

Trouble Code: P1000



OBD II Monitor Testing No Completed

Possible Causes:



A PCM Reset step was performed with an OBD II Scan Tool
 
Battery keep alive power (KAPWR) was removed to the PCM
 
One or more OBD II Monitors did not complete during an official OBD II Drive Cycle
 

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: P2006



Variable Tumble Control System (VTCS) shutter valve stuck closed

Possible Causes:



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

Trouble Code: P2009



Variable Tumble Control Solenoid Valve circuit input low

Possible Causes:



Poor connection of connectors for PCM and/or VTCS
 
Open circuit or short between VTCS terminals and PCM terminals
 
Variable tumble control valve malfunction
 
PCM has failed
 

Trouble Code: P2010



Variable Tumble Control Solenoid Valve circuit input high

Possible Causes:



Poor connection of connectors for PCM and/or VTCS
 
Open circuit or short between VTCS terminals and PCM terminals
 
Variable tumble control valve malfunction
 
PCM has failed
 

Trouble Code: P2088



CMP actuator circuit low

Possible Causes:



Poor connection of connectors for PCM and/or OCV
 
Open circuit or short between OCV terminals and PCM terminals
 
OCV malfunction
 
PCM has failed
 

Trouble Code: P2089



CMP actuator circuit high

Possible Causes:



Poor connection of connectors for PCM and/or OCV
 
Open circuit or short between OCV terminals and PCM terminals
 
OCV malfunction
 
PCM has failed
 

Trouble Code: P2096



Target A/F feedback system too lean (right bank)

Possible Causes:



Leaking exhaust gas
 
HO2S (RR, LR) malfunction
 
MAF malfunction
 
PCM has failed
 

Trouble Code: P2097



Target A/F feedback system too rich (right bank)

Possible Causes:



Leaking exhaust gas
 
HO2S (RR, LR) malfunction
 
MAF malfunction
 
PCM has failed
 

Trouble Code: P2100



Throttle Actuator circuit open

Possible Causes:



Poor connection of connectors for PCM and/or OCV
 
Open circuit or short between OCV terminals and PCM terminals
 
OCV malfunction
 
PCM has failed
 

Trouble Code: P2101



Throttle Actuator circuit range/performance

Possible Causes:



ET control relay and related circuit malfunction
 
Main relay and related circuit malfunction
 
PCM has failed
 

Trouble Code: P2102



Throttle Actuator circuit low input

Possible Causes:



Open circuits between throttle body terminals and PCM terminals
 
Short circuit between throttle body terminals and PCM terminals* Poor connection of throttle body or PCM connector
 
Throttle Valve motor malfunction
 
PCM has failed
 

Trouble Code: P2103



Throttle Actuator circuit high input

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
 
Throttle Valve motor malfunction
 
PCM has failed
 

Trouble Code: P2107



Throttle Actuator control module processor

Possible Causes:



PCM has failed
 

Trouble Code: P2108



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: 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
 

 
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