What does code P1380 mean?

Q: What does code P1380 mean?

Misfire Detected Rough Road Data Not Available. P1380 on a GM vehicle means the powertrain control module (PCM) has detected a misfire but cannot confirm whether the road surface is rough because the rough road data signal is missing or invalid. The PCM uses this signal from the antilock brake system (ABS) module to distinguish genuine engine misfires from vibration caused by rough roads, and without it the misfire detection logic is compromised.

DTC codes / GM codes / P1380

P1380 · GMMisfire Detected Rough Road Data Not Available

P1380 on a GM vehicle means the powertrain control module (PCM) has detected a misfire but cannot confirm whether the road surface is rough because the rough road data signal is missing or invalid. The PCM uses this signal from the antilock brake system (ABS) module to distinguish genuine engine misfires from vibration caused by rough roads, and without it the misfire detection logic is compromised.

SystemPowertrain

Code typeGM specific

SeverityMedium

Fix difficultyIntermediate

AreaIgnition system and misfire

Guidance is general and written for GM vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.