Cadillac P1B10: Drive Motor 2 Position Learn Incorrect

Is your scanner showing Cadillac P1B10?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

Cadillac P1B10: Drive Motor 2 Position Learn Incorrect

OVERVIEW
Severity
:
High
DIY Difficulty Level
:
Advanced
Repair Cost
:
$500-$3500
Can I Still Drive?
:
No

What Does The Cadillac P1B10 Code Mean?

Condition 1, 2, 3 and 4 Hybrid wake-up signal is not active because the ignition has been transitioned from RUN to OFF. The motor control module has learned a valid drive motor position sensor offset value at least once.

  • Condition 1: Position sensor offset value not learned because drive motor speed is greater than 50 RPM.
  • Condition 2: Position sensor offset value not learned because hybrid battery voltage as observed at the motor control module is less than 192V.
  • Condition 3: Position sensor offset value not learned because drive motor phase to phase current difference is less than 15 A.
  • Condition 4: Position sensor offset value not learned because the offset learn value is greater than the maximum allowed offset of 25 degrees.

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> GM Genuine Parts Drive Motor Generator Power Inverter Module
>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

  • GM, 2014, Service Bullettin – (EREV) Intermittent MIL With DTC P0AB9.
  • GM, 2014, Service Bullettin – (EREV) Diagnostic Tips for Intermittent MIL With DTC P0AB9.
  • GM, 2014, Service Bullettin – (EREV) Diagnostic Tips for Intermittent MIL With DTC P0AB9.
  • GM, 2019, Service Bullettin – PIP5202B (EREV) Diagnostic Tips for Intermittent MIL With DTC P0AB9.
  • GM, 2020, Service Bullettin – PIP5202C (EREV) Diagnostic Tips for Intermittent MIL With DTC P0AB9.
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