What Does P260F Mean?
The powertrain control module (PCM) has detected a performance issue with the processor that monitors the evaporative emission control system. This indicates an internal ECM/PCM software or hardware malfunction affecting EVAP system diagnostics.
Common Causes
50%
PCM/ECM internal processor failure or corruption
25%
PCM software corruption or outdated calibration
15%
Poor electrical connections at PCM connectors
10%
Low system voltage or battery issues affecting PCM operation
Diagnostic Steps
1
Step 1: Check battery voltage and charging system - verify minimum 12.4V at rest and 13.5-14.5V running
2
Step 2: Inspect all PCM connectors for corrosion, moisture, or loose pins
3
Step 3: Check for available PCM software updates or TSBs from manufacturer
4
Step 4: Monitor live data for EVAP system monitoring processor status if available
5
Step 5: Test PCM power and ground circuits with multimeter for proper voltage and continuity
Estimated Repair Cost
$150 - $1,800
Parts + labor, varies by vehicle and location
The powertrain control module (PCM) has detected a performance issue with the processor that monitors the evaporative emission control system. This indicates an internal ECM/PCM software or hardware malfunction affecting EVAP system diagnostics.
The most common cause of P260F (Evaporative System Monitoring Processor Performance) is: PCM/ECM internal processor failure or corruption
Typical repair costs for P260F range from $150 to $1,800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is safe to drive. May fail emissions testing and cause other EVAP codes to set incorrectly.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P260F to identify the root cause.
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Quick Info
Category
Powertrain
System
Emissions Control System - EVAP Monitoring
Difficulty
Type
Generic (SAE)
Recommended Tools
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