Chassis, generic

C064F Brake Pressure Sensor N Circuit Low

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

C064F: sensor N reports less than its smallest valid signal. In integrated units the sensor element and its evaluation are split: Continental Teves fits a bare measuring bridge into the hydraulic block and leaves amplification and offset to an IC in the module, while Actronics, which repairs such units, names the ATE MK60 with its internal pressure sensor as the system with the most pressure sensor problems and recommends repair or replacement of the unit rather than of a single sensor. A low reading can thus come from the sensor, the contacts or the module input. GM's 2016 hybrid brake module, for comparison, sets the low code of its left rear wheel pressure sensor below 0.3 V within 0.1 s. Nobody documents C064F or the letter N.

Likely causes

Internal pressure sensor of the hydraulic unit failed
Signal contact or line shorted to ground
Evaluation IC in the control module defective

Symptoms

  • ABS/ESC warning lamp on
  • Stability control unavailable

Repair estimate

DifficultyHardWorkshop job
Parts and labour€60–1,800
Time0.5–4 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

brake pressure sensor nsensor wiring

Related codes

C064DC064EC0650C0647C064BC0575

References: patents.google.com, actronics.co.uk, gsi.ext.gm.com.