P0C62: Drive Motor B Position Sensor Circuit B High

P0C62 means the reference level on the S2/S4 winding circuit of the motor B resolver climbs above its upper limit. GM triggers it at 4.5 V on the 2011 and 2016 Volt and ELR, 4.9 V on the 2019 Volt and 3.0 V on the 2012 two-mode trucks; on the 2016 Volt the level must stay high for 0.2125 s within 0.3125 s, rated Type B over two trips. P0C62 shows up in every GM note of the PIC5856 series, from the 2013 original to version F of 2019, for 2011-13 Volt and 2014-16 ELR, usually paired with P0C58 and sometimes P0C57. Because both windings of the same resolver report high at once, GM's remedy after clean wiring checks is a new motor B position sensor plus the latest module calibration.

Symptoms

• Service engine soon lamp, often with P0C58
• Reduced propulsion power
• Code may return after clearing until the sensor is replaced

Most likely causes

• Faulty motor B position sensor on 2011-13 Volt and 2014-16 ELR (GM PIC5856)
• Open S2 or S4 wire or terminal backed out of the connector
• Drive motor generator control module without the latest calibration

What to check, in order

Start with the simplest. You can tick off each step.

1. Read the codes with a hybrid-compatible scanner and write down the freeze frame data
2. Check the sensor's ground and make sure the signal wire is not receiving voltage from another circuit.
3. Make sure the battery cooling air intake is clean
4. Check the 12 V auxiliary battery, which can also trigger warnings
5. Leave any high-voltage measurements to a specialized repair shop

Good to know

• It can trigger limp mode.
• It affects emissions.

What each character of P0C62 means

• P: Powertrain: engine and transmission
• 0: Generic code: same on every make
• C: Subsystem depends on the code range
• 62: Specific fault in that system

Frequently asked questions

Can I keep driving with code P0C62?

If the car still runs, drive as little as possible and go to a specialized repair shop. Do not touch the orange cables: they carry high voltage.

What causes code P0C62?

The most common causes are: faulty motor B position sensor on 2011-13 Volt and 2014-16 ELR (GM PIC5856); open S2 or S4 wire or terminal backed out of the connector; drive motor generator control module without the latest calibration.

Related codes

• P0C61Drive Motor B Position Sensor Circuit B Low
• P0C58Drive Motor B Position Sensor Circuit A High
• P0C57Drive Motor B Position Sensor Circuit A Low
• P0C5FDrive Motor B Position Sensor Circuit B
• P0A48Drive Motor B Position Sensor Circuit High

Sources

• gsi.ext.gm.com: 16OBDG01 Hybrid Diagnostics
• gsi.ext.gm.com: 12OBDG06 Hybrid Diagnostics
• static.nhtsa.gov: MC 10113076 9999
• static.nhtsa.gov: MC 10115056 9999

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.