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DTC codes / U06xx · Network communication / U060E

U060ELost Communication With Crankcase Pressure Sensor

U060E is a network communication fault indicating that one or more control modules have lost contact with the crankcase pressure sensor over the vehicle's serial data bus. The computer expects a continuous stream of pressure readings from that sensor, and it has detected that the messages have stopped arriving within the required time window.

SystemNetwork
Code typeGeneric (all makes)
SeverityMedium
Fix difficultyIntermediate
AreaNetwork communication

Symptoms you may notice

  • Illumination of the check engine light or a dedicated service warning on the dashboard
  • Often no symptoms besides the warning light, with the engine running normally
  • Rough running or poor driveability if the crankcase pressure signal is used for load or emissions calculations
  • A stored U060E code accompanied by other communication or sensor codes in multiple modules
  • Intermittent warning light that comes and goes with vibration, temperature changes, or moisture
  • Possible reduced engine power or limp-home mode in vehicles that rely on crankcase pressure for emissions control

Common causes, most likely first

  1. A failed crankcase pressure sensor that no longer transmits data on the bus
  2. Damaged, corroded, or disconnected wiring or connector at the sensor or along its harness
  3. A blown fuse or poor ground that supplies power to the sensor or its communication circuit
  4. A faulty control module that cannot receive or process the sensor's messages
  5. Water intrusion or oil contamination in the sensor connector causing intermittent communication
  6. A serial data bus fault, such as a short or open in the communication line, affecting multiple modules
  7. Aftermarket accessories or poor previous repairs that disturbed the sensor wiring

How to diagnose and fix it

  1. Connect a scan tool and record all stored codes in every module to confirm U060E is active and not a historical ghost code
  2. Inspect the crankcase pressure sensor connector and harness for corrosion, oil intrusion, chafing, or loose pins
  3. Check the sensor's power and ground circuits with a multimeter and verify the communication line voltage matches the manufacturer's specification
  4. Clear the code and perform a wiggle test on the harness while watching live sensor data to catch intermittent faults
  5. If wiring and power are good, substitute a known-good sensor and recheck communication before condemning the original part
  6. If the sensor communicates on a bench test but the module still reports U060E, inspect the module's connectors and grounds for the same faults
  7. After repair, clear all codes, complete a road test, and verify the crankcase pressure reading updates smoothly in live data

Why this code is often a wiring fault

  • The crankcase pressure sensor shares its communication bus with many other modules, so a single chafed wire can set U060E alongside unrelated codes and send you chasing the wrong component.
  • A sensor that reads correctly on a bench test can still set U060E in the vehicle because the fault is in the connector or harness, not the sensor itself.
  • Oil mist and crankcase vapours attack sensor connectors over time, so a connector that looks clean on the outside may have corroded pins hidden inside the seal.
  • Some vehicles only power the crankcase pressure sensor when the engine is running, so a key-on, engine-off voltage check can falsely suggest a dead circuit.
  • A weak battery or charging system fault can cause modules to drop communication intermittently, setting U060E without any defect in the sensor circuit at all.

Can I keep driving with U060E?

The vehicle is generally safe to drive because the engine management system falls back on default values, but avoid long trips and heavy load until the fault is repaired. If the warning light is accompanied by rough running or reduced power, have the vehicle inspected promptly rather than continuing to drive.

Tools that help

Tools we recommend are in the Auto Veteran shop on Amazon. As an Amazon Associate we earn from qualifying purchases.

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

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