2003 Mercedes Benz CLK430FACTORY OEM SERVICE PROCEDURE

Anti-Theft System DTCS (1998-99

DIAGNOSTIC TROUBLE CODE LIST

Code Cause Test
B1220 Absence Of Equipment Not applicable on U.S.A. vehicles.
B1221 Absence Of Equipment Not applicable on U.S.A. vehicles.
B1276 Absence Of Equipment Not applicable on U.S.A. vehicles.
B1277 Absence Of Equipment Not applicable on U.S.A. vehicles.
B1278 Absence Of Equipment Not applicable on U.S.A. vehicles.
B1279 Absence Of Equipment Not applicable on U.S.A. vehicles.
B1435 Short In Anti-Tow Sensor TEST 9
B1436 Central Locking Safety Time Exceeded Check and repair pneumatic system as necessary. See appropriate vacuum diagram or wiring diagram in PNEUMATIC & POWER DOOR LOCK SYSTEMS article.
B1438 Central Locking Pneumatic Demand Too High Check and repair pneumatic system as necessary. See appropriate vacuum diagram or wiring diagram in PNEUMATIC & POWER DOOR LOCK SYSTEMS article.
B1439 Manifold Vacuum Assist Pneumatic Demand Too High Check and repair pneumatic system as necessary. See appropriate vacuum diagram or wiring diagram in PNEUMATIC & POWER DOOR LOCK SYSTEMS article.
B1440 Remote Trunk Lid Release Pneumatic Demand Too High Check and repair pneumatic system as necessary. See appropriate vacuum diagram or wiring diagram in PNEUMATIC & POWER DOOR LOCK SYSTEMS article.
B1497 Absence Of Equipment Not applicable on U.S.A. vehicles.
B1707 Absence Of Equipment Not applicable on U.S.A. vehicles.
B1708 Absence Of Equipment Not applicable on U.S.A. vehicles.
B1709 Alarm Siren Not Installed, Not Coded Or Defective TEST 5
B1710 Alarm Triggered By Trunk Lamp Switch Check and repair pneumatic system as necessary. See appropriate vacuum diagram or wiring diagram in PNEUMATIC & POWER DOOR LOCK SYSTEMS article.
B1711 Alarm Triggered By Engine Hood Switch TEST 1
B1712 Alarm Triggered By Left Front Door Check and repair pneumatic system as necessary. See appropriate vacuum diagram or wiring diagram in PNEUMATIC & POWER DOOR LOCK SYSTEMS article.
B1713 Alarm Triggered By Right Front Door Check and repair pneumatic system as necessary. See appropriate vacuum diagram or wiring diagram in PNEUMATIC & POWER DOOR LOCK SYSTEMS article.
B1714 Alarm Triggered By Left Rear Door Check and repair pneumatic system as necessary. See appropriate vacuum diagram or wiring diagram in PNEUMATIC & POWER DOOR LOCK SYSTEMS article.
B1715 Alarm Triggered By Right Rear Door Check and repair pneumatic system as necessary. See appropriate vacuum diagram or wiring diagram in PNEUMATIC & POWER DOOR LOCK SYSTEMS article.
B1716 Reserve Alarm Input Currently not used.
B1719 Alarm Triggered By Telephone Currently not used.
B1720 Alarm Triggered By Fax Equipment Currently not used.
B1721 Alarm Triggered By Ignition System Circuit Check wiring. See WIRING DIAGRAMS
B1722 Alarm Triggered By Stoplight Switch TEST 2
B1723 Absence Of Equipment Not applicable on U.S.A. vehicles.
B1724 Absence Of Equipment Not applicable on U.S.A. vehicles.
B1725 Alarm Triggered By Anti-Tow Sensor TEST 9
B1726 Circuit No. 30 Interrupted While In Armed State Check wiring. See WIRING DIAGRAMS
B1727 Absence Of Equipment Not applicable on U.S.A. vehicles.
B1728 Absence Of Equipment Not applicable on U.S.A. vehicles.
B1729 Voltage Supply To PSE Control Module Replace PSE module.
Chapter Navigation
Return to Chapter: DTC Index
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

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.