B0606

Code

Generic B — Body

Remote Keyless Entry Receiver Fault

Brand: Generic

Type: B — Body

Views: UK: 1 EN: 0 RU: 0

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Page language: EN

Remote lock/unlock, panic, or trunk release does not operate or works intermittently
Must be very close to vehicle for remote to work (reduced range)
Only some key fobs work while others fail
Door lock/unlock status not reported in dash or by scanner
Possible stored body control module (BCM) or RKE codes
Remote start (if equipped) fails or is unreliable

Verify spare key fob(s) and check/replace fob batteries
Use scan tool to read B0606 and any related stored codes; check for lost communication codes
Check fob recognition and programming status with dealer or OEM scan tool
Verify vehicle battery and 12 V supply to receiver (fuse, power, ground)
Inspect antenna lead(s), connectors, and receiver module for corrosion or damage
Try remote from multiple positions around vehicle to assess directional reception

Typical RKE carrier frequencies: 315 MHz (NA) or 433.92 MHz (EU/ROW) depending on market
Common modulation: ASK/AM or FSK at low data rates (kbps range)
Expected vehicle bus voltage to receiver: nominal 9–16 V (12 V system range)
Receiver ground continuity to chassis ground with low resistance
CAN/LIN communication present if receiver interfaces over vehicle bus (check bus voltage levels with scan tool)

Verify the complaint and reproduce: confirm remote fails and note conditions (range, which functions, which fobs).
Check fob battery: replace battery in fob(s) and confirm operation; try a known-good spare fob.
Scan for codes: record B0606 and any other body or communication codes (CAN/LIN). Clear codes and retest.
Verify power and ground: with key off, backprobe receiver power and ground pins; check fuses and measure 9–16 V supply and good ground.
Inspect antenna and connections: visually inspect antenna, coax/lead, and connectors for damage, corrosion, or water ingress; repair as needed.
Check module communications: verify receiver/BCM communicates on vehicle network with scan tool; look for timeouts or bus errors.
RF troubleshooting: if available, use an RF sniffing tool or spectrum analyzer to verify carrier from fob and receiver sensitivity; check range and directionality.
Reprogram/resync: attempt to reprogram or resynchronize key fobs per OEM procedure; some faults clear after successful re-learn.
Substitute test: if possible, swap in a known-good receiver/module or antenna to confirm fault before replacing parts.
Replace receiver/module only after verifying supply, ground, antenna, and communications; follow OEM programming and immobilizer/security procedures after replacement.