U060E: Lost Communication With Crankcase Pressure Sensor

What it means

The vehicle bus reports loss of communication with smart crankcase pressure sensor. PCV/blow-by monitoring cannot be evaluated and the related emission monitor cannot run.

At a glance

• Usually lights the warning light of the system that lost communication
• Affects emissions; the car can fail an emissions test

How it works

A smart crankcase pressure sensor sends pressure data over the vehicle network for crankcase ventilation and blow-by monitoring. U060E sets when the engine control module stops receiving those messages, preventing the related emissions monitor from evaluating crankcase pressure.

Common causes

Most likely first.

1. Bus wiring open or shorted
2. Module without power or ground
3. Module failed

Symptoms

• Multiple warning lights may illuminate
• Affected modules may go into limp mode or shut down
• Specific functions inoperative depending on module
• Diagnostic tools may show communication faults

How to diagnose it

1. Record freeze-frame data and scan all modules for communication codes to determine when crankcase pressure data disappeared and whether other network faults are present.
2. Check live crankcase pressure data for a missing or frozen reading and note any related ventilation or emissions faults.
3. Inspect the crankcase pressure sensor connector and nearby bus wiring for loose terminals, oil contamination, chafing, or shorts.
4. Verify the sensor or module power and ground circuits against the manufacturer's specification.
5. Test the network wiring for opens or shorts, then assess the sensor module if its wiring and supplies are intact.

Common fixes

• Reconnect or clean the crankcase pressure sensor connector.
• Repair damaged or shorted bus wiring to the sensor.
• Restore the sensor module's power or ground connection.
• Replace the crankcase pressure sensor module if its network path and supplies are sound but it remains offline.

Can I keep driving?

If the engine runs normally, a short trip is generally reasonable, but crankcase ventilation monitoring and emissions readiness may be affected. Stop if you notice oil leaks, smoke, or worsening engine behavior.