Misfire Detected - Rough Road Data Not Available
2004-2007 Buick Rainier 4.2L I6
Description
The PCM detected engine misfires but cannot access rough road data from the Electronic Brake Control Module (EBCM) to distinguish between actual misfires and crankshaft speed variations caused by rough road surfaces. The EBCM uses wheel speed sensors to detect rough road conditions.
Symptoms
- Check Engine Light
- Possible misfires
- Rough running
- Poor performance
- MIL may flash during misfire
Common Causes
- ABS module malfunction preventing rough road detection
- Actual engine misfire with coincidental ABS issue
- Wheel speed sensor failure
- Communication fault between PCM and EBCM
- Spark plug or ignition coil failure
- Vacuum leak
Diagnostic Steps
- Check for ABS/EBCM related codes first
- Inspect wheel speed sensors
- Test communication between PCM and EBCM
- If misfires are confirmed, check ignition and fuel systems
- Repair other codes before addressing P1380
Repair Notes
Repair ABS/EBCM related codes first. If actual misfires exist, diagnose ignition and fuel systems separately. Clear code and retest.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1380 on Other Vehicles
Common Questions
What does code P1380 mean on a 2004-2007 Buick Rainier?
P1380 stands for "Misfire Detected - Rough Road Data Not Available". The PCM detected engine misfires but cannot access rough road data from the Electronic Brake Control Module (EBCM) to distinguish between actual misfires and crankshaft speed variations caused by rough road surfaces. The EBCM uses wheel speed sensors to detect rough road conditions.
What are the symptoms of P1380 on a Buick Rainier?
Common symptoms of P1380 include: Check Engine Light, Possible misfires, Rough running, Poor performance, MIL may flash during misfire.
What causes P1380 on a 2004-2007 Buick Rainier?
Common causes of P1380 include: ABS module malfunction preventing rough road detection, Actual engine misfire with coincidental ABS issue, Wheel speed sensor failure, Communication fault between PCM and EBCM, Spark plug or ignition coil failure, Vacuum leak.