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Diagnostic Trouble Code Chart

WARNING: This page is about a different car, the 2007 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

If a trouble code is displayed during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the "See page" below.

Sliding roof control ECU 

DIAGNOSTIC TROUBLE CODE CHART

DTC No. Detection Item Trouble Area
B2501  Short in Roof Drive Motor RH Circuit
  • Sliding roof drive gear RH
  • Wire harness
  • Sliding roof control ECU
B2502  Open in Roof Drive Motor RH Circuit
  • Sliding roof drive gear RH
  • Wire harness
  • Sliding roof control ECU
B2503  Short in Roof Drive Motor LH Circuit
  • Sliding roof drive gear LH
  • Wire harness
  • Sliding roof control ECU
B2504  Open in Roof Drive Motor LH Circuit
  • Sliding roof drive gear LH
  • Wire harness
  • Sliding roof control ECU
B2505  Short in Luggage Door Drive Motor RH Circuit
  • Luggage door drive gear RH
  • Wire harness
  • Sliding roof control ECU
B2506  Open in Luggage Door Drive Motor RH Circuit
  • Luggage door drive gear RH
  • Wire harness
  • Sliding roof control ECU
B2507  Short in Luggage Door Drive Motor LH Circuit
  • Luggage door drive gear LH
  • Wire harness
  • Sliding roof control ECU
B2508  Open in Luggage Door Drive Motor LH Circuit
  • Luggage door drive gear LH
  • Wire harness
  • Sliding roof control ECU
B2509  Short in Pulse Width Modulation Motor RH Circuit
  • Sliding roof drive gear RH
  • Luggage door drive gear RH
  • Luggage closer motor RH
  • Wire harness
  • Sliding roof control ECU
B2510  Short in Pulse Width Modulation Motor LH Circuit
  • Sliding roof drive gear LH
  • Luggage door drive gear LH
  • Luggage closer motor LH
  • Wire harness
  • Sliding roof control ECU
B2511  Open in Roof Lock Motor Circuit
  • Sliding roof drive gear (Roof lock motor)
  • Wire harness
  • Sliding roof control ECU
B2512  Short in Luggage Closer Motor RH Circuit
  • Luggage closer motor RH
  • Wire harness
  • Sliding roof control ECU
B2513  Open in Luggage Closer Motor RH Circuit
  • Luggage closer motor RH
  • Wire harness
  • Sliding roof control ECU
B2514  Short in Luggage Closer Motor LH Circuit
  • Luggage closer motor LH
  • Wire harness
  • Sliding roof control ECU
B2515  Open in Luggage Closer Motor LH Circuit
  • Luggage closer motor LH
  • Wire harness
  • Sliding roof control ECU
B2516  Open in Quarter Window Motor RH Circuit
  • Power window regulator motor RH
  • Wire harness
  • Sliding roof control ECU
B2517  Open in Quarter Window Motor LH Circuit
  • Power window regulator motor LH
  • Wire harness
  • Sliding roof control ECU
B2518  Open in Package Tray Motor Circuit
  • Package tray trim link LH motor
  • Wire harness
  • Sliding roof control ECU
B2520  Roof Lock Switch Malfunction
  • Slide roof limit switch (Roof lock)
  • Wire harness
  • Sliding roof control ECU
B2521  Roof Close Switch RH Malfunction
  • Slid roof limit switch (Roof close RH)
  • Wire harness
  • Sliding roof control ECU
B2522  Roof Close Switch LH Malfunction
  • Slid roof limit switch (Roof close LH)
  • Wire harness
  • Sliding roof control ECU
B2523  Roof Position Switch No. 1 Malfunction
  • Slide roof limit switch (Roof position No. 1, No. 2)
  • Wire harness
B2524  Roof Position Switch No. 2 Malfunction
  • Slide roof limit switch (Roof position No. 1, No. 2)
  • Wire harness
B2525  Roof Position Switch No. 3 Malfunction
  • Slide roof limit switch (Roof position No. 3)
  • Wire harness
  • Sliding roof control ECU
B2526  Roof Position Switch No. 1, No. 2 or No. 3 Malfunction
  • Slide roof limit switch (Roof position No. 1, No. 2)
  • Slide roof limit switch (Roof position No. 3)
  • Wire harness
  • Sliding roof control ECU
B2527  Roof Open Switch Malfunction
  • Slide roof limit switch (Roof open)
  • Wire harness
  • Sliding roof control ECU
B2528  Luggage Door Close Switch Malfunction
  • Limit switch (Luggage door open and close)
  • Wire harness
  • Sliding roof control ECU
B2529  Luggage Front Lock Switch RH Malfunction
  • Limit switch (Luggage front lock RH)
  • Wire harness
  • Sliding roof control ECU
B2530  Luggage Front Lock Switch LH Malfunction
  • Limit switch (Luggage front lock LH)
  • Wire harness
  • Sliding roof control ECU
B2531  Luggage Door Open Switch Malfunction
  • Limit switch (Luggage door open and close)
  • Wire harness
  • Sliding roof control ECU
B2532  Package Tray Switch No. 1 Malfunction
  • Slide roof limit switch (Package tray No. 1)
  • Wire harness
  • Sliding roof control ECU
B2533  Package Tray Switch No. 2 Malfunction
  • Slide roof limit switch (Package tray No. 2)
  • Wire harness
  • Sliding roof control ECU
B2534  Package Tray Switch No. 1 or No. 2 Malfunction
  • Slide roof limit switch (Package tray No. 1)
  • Slide roof limit switch (Package tray No. 2)
  • Wire harness
  • Sliding roof control ECU
B2535  Tonneau Cover Switch Malfunction
  • Limit switch (Tonneau cover)
  • Wire harness
  • Sliding roof control ECU
B2536  Luggage Courtesy Switch Malfunction
  • Luggage door lock (Courtesy switch)
  • Wire harness
  • Sliding roof control ECU
B2537  Roof Control Switch Malfunction
  • Air conditioner control (Roof control switch)
  • Wire harness
  • Sliding roof control ECU
B2538  Abnormal Roof Drive Motor RH Pulse
  • Sliding roof drive gear RH
  • Wire harness
  • Sliding roof control ECU
B2539  Abnormal Roof Drive Motor LH Pulse
  • Sliding roof drive gear LH
  • Wire harness
  • Sliding roof control ECU
B2540  Abnormal Difference Between RH and LH Roof Drive Motor Pulse
  • Slide roof drive gear RH
  • Slide roof drive gear LH
  • Wire harness
  • Sliding roof control ECU
B2541  Abnormal Luggage Door Drive Motor RH Pulse
  • Luggage door drive gear RH
  • Wire harness
  • Sliding roof control ECU
B2542  Abnormal Luggage Door Drive Motor LH Pulse
  • Luggage door drive gear LH
  • Wire harness
  • Sliding roof control ECU
B2543  Abnormal Difference between RH and LH Luggage Door Drive Motor Pulse
  • Luggage door drive gear RH
  • Luggage door drive gear LH
  • Wire harness
  • Sliding roof control ECU
B2544  Transponder Key ECU Communication Stop
  • Wire harness
  • Transponder key ECU
B2545  ECM Communication Stop
  • Wire harness
  • ECM
B2546  Combination Meter ECU Communication Stop
  • Wire harness
  • Combination meter
B2547  Luggage Room J/B ECU Communication Stop
  • Wire harness
  • Luggage room junction block
B2548  Driver Side J/B ECU Communication Stop
  • Wire harness
  • Driver side junction block
B2549  Driver Door ECU Communication Stop
  • Wire harness
  • Multiplex network door ECU front LH
B2550  Passenger Door ECU Communication Stop
  • Wire harness
  • Multiplex network door ECU front RH
B2551  Pulse Width Modulation Motor RH Power Supply Circuit Malfunction
  • Wire harness
  • Sliding roof control ECU
B2552  Pulse Width Modulation Motor LH Power Supply Circuit Malfunction
  • Wire harness
  • Sliding roof control ECU
B2553  Sliding Roof Control ECU Malfunction
  • Sliding roof control ECU
B2554  Retractable Hardtop System Malfunction
  • Retractable hardtop system
B2555  A/C ECU Communication Stop
  • Wire harness
  • Air conditioning control