What Does P0C60 Mean?
This code means drive motor "B" position sensor circuit "B" is producing signals that are electrically valid but outside the expected performance envelope. The controller has detected that the circuit B position data does not correlate properly with circuit A data, motor speed, or phase current feedback. This indicates a degraded sensor or circuit that may worsen over time, potentially leading to a hard fault and motor B shutdown.
Safety Warning
Degraded position sensor performance on motor B can cause torque ripple, vibration, or reduced efficiency. If the degradation worsens, sudden motor B shutdown could occur during driving, affecting stability especially in AWD configurations.
Common Causes
28%
Resolver air gap variation on motor B due to bearing wear or thermal expansion
25%
Degraded circuit B sensor winding producing attenuated signal amplitude
20%
Contamination on the resolver rotor or stator affecting magnetic coupling
17%
High-resistance connection causing signal attenuation in circuit B
10%
Calibration drift or corrupted offset parameters for motor B circuit B
Diagnostic Steps
1
Compare live data from motor B circuit A and circuit B simultaneously—note any phase offset or amplitude difference beyond specification.
2
Measure the peak-to-peak amplitude of circuit B output with an oscilloscope and compare against circuit A output—both should be closely matched.
3
Inspect the motor B resolver for contamination, physical wear, or bearing play that could cause variable air gap.
4
Test the circuit B harness for high-resistance faults using a milliohm meter at each connection point.
5
Perform a motor B position sensor recalibration procedure if the manufacturer's tool supports it.
Estimated Repair Cost
$350 - $2,000
Parts + labor, varies by vehicle and location
This code means drive motor "B" position sensor circuit "B" is producing signals that are electrically valid but outside the expected performance envelope. The controller has detected that the circuit B position data does not correlate properly with circuit A data, motor speed, or phase current feed...
The most common cause of P0C60 (Drive Motor "B" Position Sensor Circuit "B" Range/Performance) is: Resolver air gap variation on motor B due to bearing wear or thermal expansion
Typical repair costs for P0C60 range from $350 to $2,000, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Degraded position sensor performance on motor B can cause torque ripple, vibration, or reduced efficiency. If the degradation worsens, sudden motor B shutdown could occur during driving, affecting stability especially in AWD configurations.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0C60 to identify the root cause.
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Quick Info
Category
Powertrain
System
Hybrid/EV Drive Motor System
Difficulty
Type
Generic (SAE)
Recommended Tools
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