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Diagnostic Trouble Code Definitions

WARNING: This page is about a different car, the 2001 Cadillac Seville. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC TROUBLE CODE DEFINITIONS

DTC Description Perform Test
B0001 Vehicle Speed Not Detected (1)
B0016 Instrument Panel Module Deployment Loop Resistance Low (2)
B0017 Instrument Panel Module Deployment Loop Resistance High (2)
B0018 Instrument Panel Module High/Low Circuits Shorted (2)
B0022 Steering Wheel Module Deployment Loop Resistance Low (2)
B0024 Steering Wheel Module Circuit Malfunction (2)
B0026 Steering Wheel Module Deployment Loop Resistance High (2)
B0028 Right Front Side Impact Module Resistance Low (2)
B0029 Right Front Side Impact Module Resistance High (2)
B0030 Right Front Side Impact Module Circuits Shorted (2)
B0040 Left Front Side Impact Module Resistance Low (2)
B0041 Left Front Side Impact Module Resistance High (2)
B0045 Left Front Side Impact Module Circuits Shorted (2)
B0051 Air Bag Deployed With No Faults Present (2)
B0053 Air Bag Deployed With Faults Present (2)
B0057 Right Front Seat Belt Pretensioner Resistance Low (2)
B0058 Right Front Seat Belt Pretensioner Resistance High (2)
B0059 Right Front Seat Belt Pretensioner Circuits Shorted (2)
B0064 Left Front Seat Belt Pretensioner Resistance Low (2)
B0065 Left Front Seat Belt Pretensioner Resistance High (2)
B0066 Left Front Seat Belt Pretensioner Circuits Shorted (2)
B0077 Sensing & Diagnostic Module Does Not Receive Valid Message (2)
B0078 Right Side Impact Sensor Does Not Send Valid Message (2)
B0079 Left Side Impact Sensor Does Not Send Valid Message (2)
B0080 Left Side Impact Sensor Malfunction (2)
B0081 Right Side Impact Sensor Malfunction (2)
B0082 Invalid Message From Right Side Impact Sensor (2)
B1000 Control Module Malfunction DTC B1000 
B1001 Restraints ID Does Not Match ID In Dash Integration Module (2)
B1004 Keep Alive Memory DTC B1004 
B1007 EEPROM Write Error DTC B1007 
B1009 EEPROM Checksum Error DTC B1009 
B1245 Radio Detects Loss Of E&C Communications DTC B1245 
B1271 Radio Theft Lock Activated (3)
B1310 Ambient Air Temperature Sensor Failure (4)
B1317 In Car Temperature Sensor Failure (4)
B1318 Left Sun Load Sensor Failure (4)
B1321 A/C Low Side Temperature Sensor Failure (4)
B1324 A/C Refrigerant Overpressure (4)
B1327 Device Power Circuit Low (5)
B1328 Device Power Circuit High (5)
B1328 Right Sun Load Sensor Failure (4)
B1330 Left A/C Discharge Sensor Failure (4)
B1331 Right A/C Discharge Sensor Failure (4)
B1332 Left Heater Discharge Sensor Failure (4)
B1333 Right Heater Discharge Sensor Failure (4)
B1340 Left Air Mix Door No. 1 Movement Failure (4)
B1341 Air Mix Door No. 2 Movement Failure (4)
B1343 Air Inlet Actuator Failure (4)
B1344 HTR/DEF/A/C Door Movement Failure (4)
B1390 Device Voltage Reference Input Circuit Malfunction DTC B1390 
B1396 Tilt/Telescope Position Sensor Failure (6)
B1399 Control Module Malfunction (4)
B1513 Dash Integration Module Voltage Low (5)
B1514 Dash Integration Module Voltage High (5)
B1556 Odometer Mileage Within EEPROM Disagree DTC B1556 
B1562, B1567, B1572, Or B1577 Driver's Door Switch Assembly Failure (7)
B1581, B1591, B1611 Or B1621 Mirror Position Sensor Failure (7)
B1652 Loss Of Keep Alive Memory DTC B1652 
B1656 EEPROM Write Error DTC B1656 
B1658 EEPROM Checksum Error DTC B1658 
B1717 Driver's Door Switch Assembly Malfunction (7)
B1735, B1740, B1745, B1750, B1755, B1760, B1815, B1820, B1830, B1835, B1840, B1845, B1940 Or B1945 Power Seat Switch Failure (8)
B1805 Ignition Switch Circuit Malfunction DTC B1805 
B1825, B1850, B1860, B2355, B2365 Or B2375 Seat Position Sensor Malfunction (8)
B1870 Power Seat Switch Circuit Malfunction (8)
B1875 Power Seat Motor Reached End Of Travel (8)
B1900 Positioning Sensor Voltage Out Of Range (8)
B1982 Device Power Circuit High (5)
B1983 Device Power Circuit Low (5)
B2175 Tilt/Telescope Switch Input Malfunction (6)
B2220-B2224 Or B2226 Rear Door Lock Voltage Malfunction (9)
B2419 Twilight Photocell Circuit Malfunction (10)
B2420 Twilight Delay Pot Sensor Failure (10)
B2422 Interior Light Rheostat Failure (10)
B2460 TV Antenna Module Circuit Malfunction (1)
B2461 Video Synchronization Circuit Malfunction (1)
B2462 Global Positioning Satellite Antenna Failure (1)
B2463 Navigation Module Internal Failure (1)
B2464 Laser Focus Error (1)
B2465 Navigation Module Detects Incorrect CD (1)
B2466 Navigation Module Detects Internal Error (1)
B2468 Navigation Display Head Internal Failure (1)
B2474 Backlighting Error Detected By Navigation Display Head (1)
B2475 Auxiliary Detection Signal Circuit Failure (1)
B2476 Keypad Low Reference Circuit Voltage Malfunction (11)
B2510 A/C Steering Wheel Controls Key Stuck (4)
B2511 Radio Steering Wheel Controls Key Stuck (6)
B2512 Steering Wheel Controls Circuit Malfunction (6)
B2734 Memory Checksum Write Error (12)
B2757, B2762, B2767 Or B2772 Memory Recall Switch Malfunction (8)
B2853, B2858, B2873 Or B2878 Tilt/Telescope Switch Malfunction (6)
B2860 Telescope Actuator Position Sensor Voltage High (6)
B2862 Telescope Actuator Position Sensor Voltage Low (6)
B2880 Tilt Actuator Position Sensor Voltage High (6)
B2882 Tilt Position Sensor Voltage Low (6)
B2891 Tilt/Telescope Motor Circuit Malfunction (6)
B2904 Tilt/Telescope Switch Circuit Malfunction (6)
B2947 Theft Deterrent Exciter Module Voltage Low (12)
B2948 Theft Deterrent Exciter Module Voltage Malfunction (12)
B2960 Ignition Key Code Mismatch (12)
B3031 Learned Coded Key Setting On (12)
B3055 Ignition Key Value Malfunction (12)
B3109 Remote Transmitter Battery Low (9)
B3142, B3147, B3152 Or B3157 Door Lock Switch Signal Circuit Malfunction (9)
B3172, B3177, B3182, B3187, B3192, B3197, B3282, B3287 Or B3292 Passenger's Door Module Message Failure (13)
B3377, B3382, B3387, B3392, B3397, B3452, B3457, B3462, B3467, B3472, B3477, B3482, B3517 Or B3522 Driver's Door Switch Malfunction (13)
B3527 Power Window Switch Input Malfunction (13)
B3793 Memory Seat Module Voltage Malfunction (8)
B3832 Or B3833 Power Window Lock-Out Malfunction (13)
C0550 Control Module Internal Failure (14)
C0563 Control Module Calibration Failure (14)
C0577, C0578, C0579, C0582, C0583, C0584, C0587, C0588, C0589, C0592, C0593, Or C0594 Strut Actuator Voltage Malfunction (14)
C0615, C0620, C0625 Or C0630 Position Sensor Voltage Malfunction (14)
C0635, C0638, C0640, C0643, C1252 Or C1253 Normal Force Signal Circuit Malfunction (14)
C0657 Or C0658 Compressor Motor Circuit Malfunction (14)
C0662 Or C0663 Exhaust Solenoid Control Circuit Malfunction (14)
C0665 Lift/Dive Circuit Malfunction (14)
C0690, C0691 Or C0693 Damper Driver Relay Circuit Malfunction (14)
C0696 Position Sensor Voltage Malfunction (14)
C0710 Steering Position Signal Input Malfunction (14)
C0750, C0755, C0760 Or C0765 Tire Pressure Monitoring Sensor Failure (15)
C0896 Control Module Supply Voltage Malfunction (14)
C1211 Anti-Lock Brake System Indicator Voltage High (16)
C1214 System Voltage Low (16)
C1217 Pump Motor Voltage Malfunction (16)
C1218 System Voltage High (16)
C1221-C1235 Wheel Speed Sensor Malfunction (16)
C1236 Ignition Voltage Low (16)
C1327 Electronic Brake Control Module Detects High System Voltage (16)
C1238 Brake Rotor Temperature High (16)
C1241 Magnasteer Actuator Circuit Open Or Shorted (14)
C1242 Or C1243 Pump Motor Control Malfunction (16)
C1246 Brake Lining Wear Circuit Open (16)
C1248 Dynamic Rear Proportioning Malfunction (16)
C1251 Information DTC (16)
C1254 Loss Of Keep Alive Memory (16)
C1255 Or C1246 Electronic Brake Control Module Malfunction (16)
C1261-C1274 Ignition Voltage High (16)
C1276, P1644 Or P1689 Delivered Torque Signal Malfunction (16)
C1277 Or P1571 Requested Torque Signal Malfunction (16)
C1278 Electronic Brake Control Module Disabled Traction Control System (16)
C1281, C1283 Or C1286 Yaw Rate Input Malfunction (16)
C1282 Yaw Rate Input Error (16)
C1284 Or C1285 Lateral Accelerometer Sensor Malfunction (16)
C1287 Or C1288 Steering Wheel Position Sensor Out Of Phase (16)
C1291 Or C1293 Stoplight Switch Malfunction (16)
C1294 Stoplight Switch Circuit Short To Voltage (16)
C1295 Stoplight Switch Circuit Inactive (16)
PXXXX Powertrain Control Module Malfunction (17)
U1000 & U1255 Class 2 Communication Malfunction DTC U1000 & U1255 
U1001-U1254 Loss Of XXX Communication DTC U1001-U1254 
U1161-U1163 Or U1170 Driver's Door Module Communication Malfunction DTC U1161-U1163 OR U1170 
U1300 Class 2 Short To Ground DTC U1300 
U1301 Class 2 Short To Voltage DTC U1301 
U1305 Loss Of Class 2 Serial Data Communication DTC U1305 
U1500 OnStar(R) Serial Data Circuit Failure DTC U1500 
U1713 Or U1715 Window Sensor High Speed Communication Circuit Failure DTC U1713 OR U1715 
U1714 Or U1716 Driver's Door Module Communication Failure DTC U1714 OR U1716 
U2150 Loss Of Communication With Navigation Processor DTC U2150 
U2151 Navigation Display Serial Data High/Low Circuit DTC U2151 
U2153 Navigation Module Internal Failure DTC U2153 
(1) Repair navigation system as necessary. See appropriate NAVAGIATION SYSTEMS article
(2) For information on air bag DIAGNOSIS & TESTING or DISPOSAL PROCEDURES, see lemon-25(R) AIR BAG SERVICE & REPAIR MANUAL, DOMESTIC & IMPORTED MODELS.
(3) Repair radio as necessary.
(4) See appropriate AUTOMATIC A/C-HEATER SYSTEM article in AIR CONDITIONING & HEATING.
(5) See GENERATORS & REGULATORS - SEVILLE article in STARTING & CHARGING SYSTEMS.
(6) See STEERING COLUMN SWITCHES - SEVILLE article.
(7) See POWER MIRRORS - SEVILLE article.
(8) See POWER SEATS - SEVILLE article.
(9) See POWER DOOR LOCKS & REMOTE KEYLESS ENTRY SYSTEMS - SEVILLE article.
(10) See HEADLIGHTS - AUTOMATIC TWILIGHT SENTINEL - SEVILLE article.
(11) Repair cellular phone as necessary.
(12) See ANTI-THEFT SYSTEMS - SEVILLE article.
(13) See POWER WINDOWS - SEVILLE article.
(14) See appropriate ELECTRONIC article in SUSPENSION.
(15) See ANALOG INSTRUMENT PANELS - SEVILLE article.
(16) See appropriate ANTI-LOCK article in BRAKES.
(17) See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
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