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 B2300 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
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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.