B2722
PASS-Key Detection Circuit
B2722 is an OBD-II diagnostic trouble code meaning: PASS-Key Detection Circuit. Common causes: damaged or worn pass-key, malfunction of the reader antenna around the ignition switch. Estimated repair cost: $56–167.
Symptoms
- Engine won't start
- The engine stalls immediately after starting
- The immobilizer indicator is flashing
Causes
- Damaged or worn PASS-Key
- Malfunction of the reader antenna around the ignition switch
- Open or short circuit in wiring harness
- PASS-Key module malfunction
- Problems with the power supply to the PASS-Key module
How to Fix
- Check the condition of the PASS-Key, try a spare key
- Check the integrity of the reader antenna around the ignition switch
- Check the wiring harness for breaks, short circuits or corrosion.
- Check the power and ground of the PASS-Key module
- Read and analyze immobilizer fault codes
- If necessary, replace the PASS-Key module or antenna
Related codes
FAQ
What does the B2722 code mean?
B2722 is an OBD-II diagnostic trouble code that indicates: PASS-Key Detection Circuit
What causes a B2722 error code?
The most common causes of B2722 include: Damaged or worn PASS-Key; Malfunction of the reader antenna around the ignition switch; Open or short circuit in wiring harness; PASS-Key module malfunction.
How do I fix a B2722 diagnostic trouble code?
To fix B2722: Check the condition of the PASS-Key, try a spare key. Check the integrity of the reader antenna around the ignition switch. Check the wiring harness for breaks, short circuits or corrosion.. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B2722?
Yes, but get it checked soon
How much does it cost to fix B2722?
The estimated repair cost for B2722 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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