LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Saturn >> 2000 >> LS2 Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 16 (Body Control Modules) >> Self-Diagnostic System >> Retrieving Diagnostic Trouble Codes (DTCS) >> Using Scan Tool >> Body Control Module Diagnostic Trouble Code Definitions
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Body Control Module Diagnostic Trouble Code Definitions

WARNING: This page is about a different car, the 2000 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
BODY CONTROL MODULE DIAGNOSTIC TROUBLE CODE DEFINITIONS

DTC Description
B0432  Rear Defogger Relay Circuit (Open Or Short To Ground)
B0433  Rear Defogger Relay Circuit (Short To Voltage Or BCM Open)
B0502  Right Daytime Running Lights Relay Circuit (Open Or Short To Ground)
B0503  Right Daytime Running Lights Relay Circuit (Short To Voltage Or BCM Open)
B0507  Left Daytime Running Lights Relay Circuit (Open Or Short To Ground)
B0508  Left Daytime Running Lights Relay Circuit (Short To Voltage Or BCM Open)
B0605  BCM Internal Memory Malfunction
B1000  ECU Malfunction
B2403  Front Foglight Switch Circuit (Short To Voltage)
B2408  Rear Foglight Switch Circuit (Short To Voltage)
B2482  Back-Up Light Relay Circuit (Open Or Short To Ground)
B2483  Back-Up Light Relay Circuit (Short To Voltage Or BCM Open)
B2527(1) Horn Relay Circuit (Open Or Short To Ground)
B2528(1) Horn Relay Circuit (Short To Voltage Or BCM Open)
B2567(2) Folding Top Release Switch Circuit (Convertible Only)
B2573(2) Hatch Release Switch Circuit (Short To Voltage)
B2578  Right Front Turn Signal Monitor Circuit (Short To Voltage)
B2583  Left Front Turn Signal Monitor Circuit (Short To Voltage)
B2587(1) Column Lock/Unlock Drive "A" (Open Or Short To Ground)
B2588(1) Column Lock/Unlock Drive "A" (Open Or Short To Voltage)
B2592(1) Column Lock/Unlock Drive "B" (Open Or Short To Ground)
B2593(1) Column Lock/Unlock Drive "B" (Open Or Short To Voltage)
B2597  Traction Control/Suspension Switch Circuit (Short To Ground)
B2647  Ambient Light Sensor Circuit Low
B2648  Ambient Light Sensor Circuit High
B2721(3) PASS-Key® Detection Circuit (Out Of Range)
B2722(3) PASS-Key® Detection Circuit (Short To Ground)
B2723(3) PASS-Key® Detection Circuit (Short To Voltage Or Open)
B2735(3) PASS-Key® Programming Mode Active
U1000 & U1255  Class 2 Communication Malfunction
U1001-U1254  (4) Loss Of Communication With XXX
U1300  Serial Data Line Short To Ground
U1301  Serial Data Line Short To Battery
(1) See STEERING COLUMN SWITCHES - CORVETTE article.
(2) See POWER HATCH & FUEL DOOR RELEASE - CORVETTE article.
(3) See ANTI-THEFT SYSTEMS - CORVETTE article.
(4) To identify module not communicating (XXX), see DTC U1001-U1254: LOSS OF COMMUNICATION WITH XXX  under DIAGNOSTIC TESTS.