What Does P1699 Mean?
The powertrain control module has detected an abnormally high voltage signal in the engine torque reduction control circuit. This circuit is used to request engine torque reduction during transmission shifts or traction control events.
Common Causes
35%
Shorted wiring or connector in torque reduction signal circuit to power
25%
Faulty powertrain control module (PCM) output driver
20%
Failed transmission control module (TCM) input circuit
15%
Water intrusion or corrosion in control module connectors
5%
Incorrect module programming or software calibration
Diagnostic Steps
1
Step 1: Inspect PCM and TCM connectors for water intrusion, corrosion, or damaged pins
2
Step 2: Measure voltage on torque reduction signal wire at TCM connector (should be 0-5V, not battery voltage)
3
Step 3: Check for short to power in harness between PCM and TCM using resistance and voltage tests
4
Step 4: Monitor live data stream for torque reduction requests during test drive
5
Step 5: Test PCM and TCM functionality with bi-directional controls if available; replace faulty module
Estimated Repair Cost
$150 - $1,200
Parts + labor, varies by vehicle and location
The powertrain control module has detected an abnormally high voltage signal in the engine torque reduction control circuit. This circuit is used to request engine torque reduction during transmission shifts or traction control events.
The most common cause of P1699 (Engine torque control cut signal circuit high input) is: Shorted wiring or connector in torque reduction signal circuit to power
Typical repair costs for P1699 range from $150 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
May cause harsh shifting or loss of traction control functionality. Vehicle is generally safe to drive but should be repaired promptly.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1699 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Powertrain
System
Engine/Transmission Control Communication
Difficulty
Type
Manufacturer
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
