Mazda B-Series Truck 2001–2002 — technical service bulletin
Bulletin 0100503 · NHTSA communication 10002078 · issued Feb 7, 2003
Technical service bulletin
communication type
Engine and Engine Cooling
component
2001–2002
model years
4
vehicle entries
Official summary
Malfunction indicator lamp (mil) on and/or diagnostic trouble codes p0401, p0402, p1400 or p1401 and runs rough, lacks power, surge, poor fuel economy. *tt
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.