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Home / DTC / B2571 — Right Park Lamp Short to Ground

B2571 — Right Park Lamp Short to Ground

Detailed page for trouble code B2571.

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11,451generic
22,461specific
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Code

B2571

HYUNDAI B — Body

Right Park Lamp Short to Ground

Brand: HYUNDAI
Type: B — Body
Views: UK: 17 EN: 27 RU: 17
AI status
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Page language: EN

Causes

  • Damaged wiring insulation chafing to chassis ground
  • Corroded or pushed-back connector pin contacting ground
  • Shorted or melted bulb socket or lamp assembly
  • Aftermarket accessory or lamp wiring improperly tapped to circuit
  • Faulty right park lamp (internal short)
  • Ground wire incorrectly routed or touching body

Symptoms

  • Right park lamp does not illuminate or is intermittent
  • Related fuse(s) blow or repeatedly fail
  • Other lighting functions affected (e.g., turn/marker) on same circuit
  • Flickering or dim lights at the right front
  • DTC B2571 stored in BCM with lamp circuit faults reported
  • Battery drain when lights are commanded ON (in some cases)

What to check

  • Use a scan tool to read DTCs, freeze frame and current status; confirm B2571 is active or stored
  • Visually inspect right front lamp assembly, socket, bulb and connector for corrosion, water, melted plastic or pin damage
  • Inspect wiring harness along routing from lamp to body control module for chafe, repair spots, pinches, or recent bodywork
  • Check related fuses and fusible links for continuity and evidence of overheating
  • Backprobe connector and measure voltage at connector with lamp plug connected and disconnected (with system in correct ON state)
  • Disconnect the lamp assembly and measure resistance from the lamp positive feed to chassis ground to detect a short to ground

Signal parameters

  • Expected battery voltage at lamp feed with park lamp ON: ~11–14 V (varies with battery/charging)
  • If short to ground present: voltage at feed typically near 0 V or low and fuse may open
  • Typical incandescent park lamp current: ~0.2–1.5 A depending on bulb; LED modules draw much less (tens to hundreds of mA)
  • Lamp filament resistance cold: low ohms (~2–50 Ω depending on lamp type); LED modules show higher DC resistance and may require current testing
  • Continuity/ohms from feed to chassis ground with lamp disconnected: should be open/very high resistance; low resistance indicates short

Diagnostic algorithm

  1. Read and record DTC(s) and lamp status with a scan tool. Note whether code is active or intermittent.
  2. Visually inspect the right park lamp, socket and connector. Replace bulb with a known-good unit or remove bulb and test behavior (with key OFF) to rule out bulb internal short.
  3. Check fuses related to the lamp circuit. If fuse is blown, replace with proper-rated fuse only for testing; if it blows immediately when lights commanded ON, a short exists.
  4. With the lamp connector disconnected, measure voltage at the feed terminal while park lamps are commanded ON. Correct operation: battery voltage present. If voltage is 0 V, trace back toward BCM/fuse for an open or driver fault.
  5. With connector disconnected and power OFF, measure resistance from feed terminal to chassis ground. Low resistance indicates short to ground. Isolate sections of wiring by disconnecting intermediate connectors until the short disappears to locate damage.
  6. Inspect harness routing and repair history; flex harness while measuring continuity to reproduce fault if intermittent. Look for pinched areas near bumper, hood hinge, or body seams.
  7. If wiring and lamp assembly check good, inspect the connector pins for corrosion or bent pins. Repair or replace damaged connector and pins. Clean and apply dielectric grease to prevent moisture intrusion.
  8. If wiring and lamp assembly are good, inspect related ground points and the BCM connector. Check for BCM software updates and perform BCM self-tests per service manual; replace BCM only after wiring and lamp assembly are confirmed good.
  9. Clear DTCs after repair and verify function by cycling lamps and driving with lamps ON. Re-scan for reoccurrence and monitor live data.

Likely causes

  • Broken/damaged harness near bumper or lamp housing
  • Water intrusion in lamp connector causing internal short
  • Replacement bulb of wrong type causing internal short or thermal damage
  • Connector terminal pushed out and contacting body metal
  • Short between lamp positive feed and body ground at splice or repair

Fault status

⚠️ Status
Right park lamp circuit short to ground detected — low/grounded voltage on the right park lamp feed. Inspect wiring, connector and lamp for short to chassis ground.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-1.5 hours
371

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