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.
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HOMESERVICE MANUALSMITSUBISHI1990MONTERO SP, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 28 (WIRELESS CONTROL MODULE (WCM) - LANCER EVOLUTION)DIAGNOSISDIAGNOSTIC TROUBLE CODE PROCEDURESDTC B1A28: ENGINE CONTROL MODULE AUTHENTICATE ERRORDTC SET CONDITION
1990 Mitsubishi Montero SP, Standard
DTC Set Condition
1990 Mitsubishi Montero SP, StandardSECTION DTC Set Condition
WARNING: This page is about a different car, the 2008 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.
WCM sets DTC B1A28 when the ignition key certification result and the engine control module starting condition do not match.
RENDER: 1.0x
NO RELATED
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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.