P28CC: Clutch A Motor Position Sensor Circuit Range/Performance

The clutch A motor position signal does not correlate with the commanded commutation. Sensor offset or signal integrity degraded.

Symptoms

• Check engine or transmission warning light on
• Harsh, delayed, or missing shifts
• Possible limp mode (locked in one gear)
• Slipping or shuddering during gear changes

Most likely causes

• Sensor mechanically offset
• Electrical noise on signal line
• Sensor element aged beyond calibration window

What to check, in order

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

1. Check the fluid level and condition
2. Compare the reading with other engine data while varying the engine speed.
3. Read the input and output speed in live data
4. Check the connector and wiring
5. Check for other related engine codes
6. Consult the manufacturer's procedure for the transmission

Good to know

• Repair difficulty: hard
• It can trigger limp mode.

What each character of P28CC means

• P: Powertrain: engine and transmission
• 2: Generic code: same on every make
• 8: Transmission
• CC: Specific fault in that system

Frequently asked questions

Can I keep driving with code P28CC?

Drive gently to a repair shop. If it slips, you hear clunks, or it loses its gears, do not keep driving.

What causes code P28CC?

The most common causes are: sensor mechanically offset; electrical noise on signal line; sensor element aged beyond calibration window.

Related codes

• P28DBClutch B Motor Position Sensor Circuit Range/Performance

Sources

• github.com: dtc database
• en.wikipedia.org: Brushless DC electric motor
• en.wikipedia.org: Dual clutch transmission

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.