Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBUICK2000PARK AVENUE BASE, 3.8 1REPAIR AND DIAGNOSISBRAKESTRACTION CONTROLANTI-LOCK BRAKE SYSTEM WITH TRACTION CONTROL SYSTEM AND VSES - BOSCH 5.3DIAGNOSIS & TESTINGDIAGNOSTIC SYSTEM CHECK
2000 Buick Park Avenue Base, 3.8 1
Diagnostic System Check
2000 Buick Park Avenue Base, 3.8 1SECTION Diagnostic System Check
- Install scan tool. If scan tool powers up, go to next step. If scan tool does not power up, see SCAN TOOL DOES NOT POWER UP in appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT.
- Turn ignition on, engine off. Try to establish scan tool communication with Driver Information Center (DIC), Electronic Brake Control Module (EBCM), Instrument Panel Cluster (IPC), Instrument Panel integration Module (IPM) and Powertrain Control Module (PCM). If communication with all modules is established, go to next step. If communication with any module is not established, see SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE in appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT.
- Select display DTC function for each module. Record all displayed DTCs, status of displayed DTCs and module that set DTC. If DTCs are displayed, go to next step. If no DTCs are displayed, see SYMPTOM DIAGNOSIS .
- Retrieve codes and perform appropriate test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS table.
DIAGNOSTIC TROUBLE CODE DEFINITIONS
| DTC | Description | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BXXXX | (1) | ||||||||||||
| C1211 | ABS Indicator Signal Circuit High | ||||||||||||
| C1214 | System Relay Contact Or Coil Circuit Open | ||||||||||||
| C1217 | BPMV Pump Motor Control Circuit Short | ||||||||||||
| C1218 | Pump Motor Voltage | ||||||||||||
| C1221-C1224 | Wheel Speed Sensor Input Signal Is Zero | ||||||||||||
| C1225-C1228 | Excessive Wheel Speed Variation | ||||||||||||
| C1232-C1235 | Wheel Speed Sensor Circuit Open Or Shorted | ||||||||||||
| C1236 | Low System Supply Voltage | ||||||||||||
| C1237 | High System Supply Voltage | ||||||||||||
| C1238 | Drive Wheel Brake Rotor Excessive Temperature | ||||||||||||
| C1242 | BPMV Pump Motor Short To Ground | ||||||||||||
| C1243 | BPMV Pump Motor Stalled | ||||||||||||
| C1245 | Tire Inflation Monitor | ||||||||||||
| C1246 | Brake Lining Wear Circuit Open | ||||||||||||
| C1248 | Dynamic Rear Proportioning Control System | ||||||||||||
| C1251 (2) | RSS Indicated Malfunction | ||||||||||||
| C1252 (3) | LF Normal Force Malfunction | ||||||||||||
| C1253 (3) | RF Normal Force Malfunction | ||||||||||||
| C1254 | Checksum Error | ||||||||||||
| C1255 | EBTCM Internal Malfunction (ABS/TCS Disabled) | ||||||||||||
| C1256 | EBTCM Internal Malfunction | ||||||||||||
| C1261 | LF Inlet Solenoid Valve Malfunction | ||||||||||||
| C1262 | LF Outlet Solenoid Valve Malfunction | ||||||||||||
| C1263 | RF Inlet Solenoid Valve Malfunction | ||||||||||||
| C1264 | RF Outlet Solenoid Valve Malfunction | ||||||||||||
| C1265 | LR Inlet Solenoid Valve Malfunction | ||||||||||||
| C1266 | LR Outlet Solenoid Valve Malfunction | ||||||||||||
| C1267 | RR Inlet Solenoid Valve Malfunction | ||||||||||||
| C1268 | RR Outlet Solenoid Valve Malfunction | ||||||||||||
| C1271 | LF TCS Master Cylinder Isolation Valve Malfunction | ||||||||||||
| C1272 | LF TCS Prime Valve Malfunction | ||||||||||||
| C1273 | RF TCS Master Cylinder Isolation Valve Malfunction | ||||||||||||
| C1274 | RF TCS Prime Valve Malfunction | ||||||||||||
| C1276 | Delivered Torque Signal Circuit Malfunction | ||||||||||||
| C1277 | Requested Torque Signal Circuit Malfunction | ||||||||||||
| C1278 | TCS Temporarily Inhibited By PCM | ||||||||||||
| C1281 | Steering Sensor Uncorrelated Malfunction | ||||||||||||
| C1282 | Yaw Rate Sensor Bias Circuit Malfunction | ||||||||||||
| C1283 | Excessive Time To Center Steering | ||||||||||||
| C1284 | Lateral Accelerometer Self Test Malfunction | ||||||||||||
| C1285 | Lateral Accelerometer Circuit Malfunction | ||||||||||||
| C1286 | Steering Sensor Bias Malfunction | ||||||||||||
| C1287 | Steering Sensor Rate Malfunction | ||||||||||||
| C1288 | Steering Sensor Circuit Malfunction | ||||||||||||
| C1291 | Open Brakelight Switch Contacts During Deceleration | ||||||||||||
| C1293 | DTC C1291 Set In Previous Ignition Cycle | ||||||||||||
| C1294 | Brakelight Switch Circuit Always Active | ||||||||||||
| C1295 | Brakelight Switch Circuit Open | ||||||||||||
| C1298 (4) | Class 2 Serial Data Link Malfunction | ||||||||||||
| P1571 | Requested Torque Signal Circuit Malfunction | ||||||||||||
| P1644 | Delivered Torque Signal Voltage Invalid | ||||||||||||
| P1689 | Delivered Torque Signal Voltage Invalid | ||||||||||||
| PXXXX | (5) | ||||||||||||
| UXXXX | (6) | ||||||||||||
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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.