Water intrusion into a connector located under the cab, beneath the driver's seat, can cause a rough idle, erratic speedometer operation, ABS Light and Check Engine Light illumination, and automatic transmission shifting problems. If needed, connector repair parts are available from Mazda dealers, and possibly some Ford dealers.
Resources for the Repair and Maintenance of your 2003 Mazda B3000
2003 Mazda B3000
2003 Mazda B3000 Problems
The Check Engine Light may come on and the engine will run poorly. During diagnosis the technician may find a trouble code for the Camshaft Position Sensor (CMP), P0340. It is recommended to check the CMP driveshaft for looseness in the housing because if the shaft is loose, a new sensor will be damaged again. If the shaft has play, the CMP sensor and housing unit will need to be replaced. Our technicians recommend using the factory type timin...
A dirty, or contaminated mass airflow (MAF) sensor can cause the engine to run poorly. There may be a Check Engine Light with trouble codes relating to the MAF sensor, P0102 and/or P0103. In some cases, carefully cleaning the sensor element will fix the problem, but replacement may be required.
The engine may fail to start due to an electrically shorted sensor. Some of the sensors may internally short and not blow any fuses. A technician may find no spark and no operation of the fuel injectors in the diagnosis. One way a technician may isolate the defective sensor is by disconnecting sensors one by one to see if the engine starts.
If the engine cranks but does not start, it may be caused by a tripped inertia switch. Switch the key to "ON" and the fuel pump should be heard running for a second or two. Listen at the gas filler if necessary. The inertia switch is located on the firewall and can be tripped when the parking brake is set too hard and then released. The inertia switch should be reset, and will click when it is reset.
2003 Mazda B3000 Recalls (Recent)
Summary: MAZDA IS RECALLING MODEL YEAR 1995 THROUGH 1997 AND MODEL YEAR 2001 THROUGH 2003 TRUCKS EQUIPPED WITH TEXAS INSTRUMENTS SPEED CONTROL DEACTIVATION SWITCH (SCDS) AND/OR ANTI-LOCK BRAKE SYSTEM (ABS) AND MANUFACTURED ON OR BEFORE DECEMBER 5, 2002. A COMPONENT OF THE CRUISE CONTROL DEACTIVATION SWITCH MAY DETERIORATE OVER TIME AND DEVELOP A LEAK. THIS OCCURRENCE COULD CAUSE THE SWITCH TO OVERHEAT, SMOKE OR BURN WHICH COULD RESULT IN AN UNDER HOOD FIRE.Learn more »
2003 Mazda B3000 Questions and Answers
A repetative sqweak is coming from thetop end of engine it seems to hold steady with the rpms?
Could it be a valve issue or cam.....?
the left stop and turn does not workat the trailor plug I need to find where the trailor inverter is located so I can repair or replace it email email@example.com
check engine light came on. the shop said the computer needed updates.was charge 130.dollors,was this fair. thank you
how to reset passive anti-theft system after replacing battery and spark plugs.