Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2002 Mazda B4000 Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Engine Immobilizer DTCS
ENGINE IMMOBILIZER DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| B1213 | ANTI-THEFT NUMBER OF PROGRAMMED KEYS IS BELOW MINIMUM |
| B1600 | NO KEY CODE RECEIVED/DAMAGED ENCODED KEY OR USE OF NON-PATS ENCODED IGNITION KEY |
| B1601 | PATS RECEIVED INCORRECT KEY CODE FROM IGNITION KEY TRANSPONDER |
| B1602 | INVALID KEY CODE FORMAT FROM IGNITION KEY TRANSPONDER |
| B1681 | PATS TRANSCEIVER MODULE SIGNAL IS NOT RECEIVED |
| B2103 | PATS TRANSCEIVER ANTENNA NOT CONNECTED OR DEFECTIVE TRANSCEIVER |
| B2139 | PCM IDENTIFICATION DOES NOT MATCH BETWEEN PATS & PCM |
| B2141 | NO SECURITY IDENTIFICATION EXCHANGE BETWEEN PATS & PCM |
| U1147 | INVALID OR MISSING DATA FOR VEHICLE SECURITY |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.