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P1860 Oldsmobile Code - TCC PWM Solenoid Circuit Electrical

- Code Popularity: 5,918 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P1860 Oldsmobile?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid
  • Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid harness is open or shorted
  • Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid circuit poor electrical connection
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How to Fix the DTC P1860 Oldsmobile?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

There is a factory service bulletin for the following Oldsmobile models:
2000-2002 Oldsmobile Intrigue
2000-2003 Oldsmobile Aurora
2000-2004 Oldsmobile Alero
2000-2004 Oldsmobile Silhouette
Oldsmobile Factory Service Bulletin OBDII Code P1860

Search for P1860 Oldsmobile Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1860 Oldsmobile code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P1860 Oldsmobile Description

The Torque Converter Clutch Pulse Width Modulation (TCC PWM) solenoid valve controls the fluid acting on the converter clutch valve. The converter clutch valve controls the TCC application and release. The solenoid attaches to the control valve body within the transmission. The solenoid receives ignition voltage through circuit 239. The Powertrain Control Module (PCM) controls the solenoid by providing a ground path on circuit 418. Current flows through the solenoid coil according to the duty cycle (percentage of ON and OFF time). The TCC PWM solenoid valve provides a smooth engagement of the torque converter clutch by operating during a duty cycle percent of ON time. When the PCM detects a continuous open, short to ground or short to power in the TCC PWM solenoid valve circuit, then Diagnostic Trouble Code (DTC) P1860 sets. DTC P1860 is a type B DTC.

OBDII Code P1860 Oldsmobile - TCC PWM Solenoid Circuit Electrical - AutoCodes.com
P1860 Oldsmobile Code - TCC PWM Solenoid Circuit Electrical

Need More Information on the Code?

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Code P1860 Oldsmobile comments

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