P0C2E: Electric/Auxiliary Transmission Fluid Pump Control Module Feedback Signal High

P0C2E means the feedback line from the auxiliary pump control module sits above its valid range, for example shorted to supply voltage or no longer pulled down by the module. No manufacturer documents this exact code publicly. GM's use of the siblings shows what the line carries: on the Two-Mode hybrids P0C2B watches a status message from the pump controller every 1.5 s, Type B, and on the Chevrolet Bolt EV and EUV bulletin 21-NA-148 links the low variant P0C2D to bad solder joints inside the pump. A stuck-high line can hide real pump faults, so the controller usually stops relying on the pump. CARB requires circuit checks for such signals. P0C2D is the low side, P0C2C the plausibility check, P0C25 the high fault on the command line.

Medium severity. Can I keep driving?It depends on the symptoms. If the car is running normally you can go to a repair shop; if it goes into limp mode, drive as little as possible.

Symptoms

MIL or Service Vehicle Soon lamp
Start-stop or electric drive restricted

Most likely causes

Feedback line shorted to supply voltage
Output stage of the pump control module no longer switching
Lost ground at the pump module letting the line float high

What to check, in order

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

Check the battery and grounds
Check the sensor's ground and make sure the signal wire is not receiving voltage from another circuit.
Clear the code and see if it returns
If it is a reference voltage code, disconnect sensors one at a time and see if the voltage recovers
Check whether a software update is available
Do not replace the control module without a full diagnosis

Good to know

Repair difficulty: medium
It can trigger limp mode.
It affects emissions.

What each character of P0C2E means

P: Powertrain: engine and transmission
0: Generic code: same on every make
C: Subsystem depends on the code range
2E: Specific fault in that system

Frequently asked questions

Can I keep driving with code P0C2E?

It depends on the symptoms. If the car is running normally you can go to a repair shop; if it goes into limp mode, drive as little as possible.

What causes code P0C2E?

The most common causes are: feedback line shorted to supply voltage; output stage of the pump control module no longer switching; lost ground at the pump module letting the line float high.

Related codes

Sources

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.