What Does P0C2E Mean?
DTC P0C2E indicates the feedback signal from the auxiliary transmission fluid pump control module is reading above the maximum expected voltage threshold. A high feedback signal typically points to a short-to-voltage condition in the wiring, an internal module failure pulling the signal high, or an open in the signal return (ground) path that causes the voltage to float high.
Common Causes
30%
Short-to-battery voltage in the feedback signal wiring
25%
Open ground/return path for the feedback circuit causing voltage to float high
20%
Failed pump control module with internal pull-up failure
15%
Cross-wired or pin-to-pin short at the connector
10%
TCM/PCM input circuit fault reading artificially high
Diagnostic Steps
1
Measure the feedback signal voltage at the TCM/PCM connector and confirm it exceeds the specification.
2
Disconnect the pump control module and recheck the voltage on the harness side to isolate whether the fault is in wiring or the module.
3
Check the ground/return wire for the feedback circuit for continuity — an open ground will cause the signal to read high.
4
Inspect the harness for areas where the feedback wire may contact power sources or other wires carrying battery voltage.
5
If wiring and grounds are intact, replace the pump control module and verify the signal returns to normal.
Estimated Repair Cost
$150 - $800
Parts + labor, varies by vehicle and location
DTC P0C2E indicates the feedback signal from the auxiliary transmission fluid pump control module is reading above the maximum expected voltage threshold. A high feedback signal typically points to a short-to-voltage condition in the wiring, an internal module failure pulling the signal high, or an ...
The most common cause of P0C2E (Auxiliary Transmission Fluid Pump Control Module Feedback Signal High) is: Short-to-battery voltage in the feedback signal wiring
Typical repair costs for P0C2E range from $150 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
A high feedback signal provides false information to the TCM about pump operation, potentially masking a pump malfunction. The control system may incorrectly believe the pump is running faster than it actually is. This can lead to inadequate transmission cooling. Repair promptly.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0C2E to identify the root cause.
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Quick Info
Category
Powertrain
System
Transmission / Hybrid Drivetrain
Difficulty
Type
Generic (SAE)
Recommended Tools
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