B1921 JAGUAR Possible Causes
- Faulty Restraint Control Module (RCM)
- Restraint Control Module (RCM) harness is open or shorted
- Restraint Control Module (RCM) circuit poor electrical connection
How do I fix code B1921 JAGUAR
Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
Cost of diagnosing the B1921 JAGUAR code
Labor: 1.0The cost of diagnosing the B1921 JAGUAR code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
B1921 JAGUAR Possible Symptoms
- Air Bag Warning Light ON
B1921 JAGUAR MeaningThe Restraint Control Module (RCM) monitors resistance between ground connections at its housing and reference ground at RCM connector. If RCM detects resistance more than 100 ohms, it stores Diagnostic Trouble Code (DTC) B1921 in memory and flashes on AIR BAG warning light.
B1921 JAGUAR More InformationNeed more information on how to fix the B1921 JAGUAR code?
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Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service
- Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
- Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
- Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
- Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.