Fault Family System: Powertrain (P-Codes) 3 SAE Codes

Misfire Rough Road Sensor

Diagnostic & Technical Explanation

Code P0317 (Rough Road Hardware Not Present) relates to the accelerometer-based rough-road sensor some platforms use to prevent false misfire counts when the crankshaft speed signal is disturbed by a bumpy road rather than an actual combustion event. Causes are a missing or uncalibrated rough-road option module, an open or shorted sensor signal circuit, or corroded connector pins at the sensor's mounting location under the vehicle.

These 3 diagnostic trouble codes share one detection mechanism and one repair path, which is why MechanicDB groups them into a single authored fault family rather than repeating the same explanation 3 times.

Codes in this family (3)

Code	Definition	Repair coverage
P0317	Rough Road Hardware Not Present	4 ranked fixes
P0318	Rough Road Sensor A Signal Circuit	4 ranked fixes
P0319	Rough Road Sensor B Signal Circuit	4 ranked fixes

What this page does not show

This page publishes the fault mechanism and the code index. The licensed dataset adds, for every one of the 15,886 codes, the full authored repair set (56,729 procedures in total) with the fields deliberately withheld here:

Procedures 2..n after the first-listed procedure
Aftermarket parts cost ranges in USD (est_parts_cost_min/max_usd)
Professional labor-hour estimates (est_labor_hours)
Step-by-step diagnostic and repair instructions
Replacement-part mappings and catalog lookups
6,637 manufacturer-specific OEM codes across 32 makes ($149 tier)

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