AutoCodes – Cadillac – P2670 Cadillac

P2670 Cadillac Code - Actuator High Control Circuit Group 2 Low Voltage

Quick Answer

The Transmission Control Module (TCM) receives information from a variety of sensors, switches, and serial data information from other control modules. Common causes include Faulty Transmission Control Solenoid Valve, Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P2670 Cadillac indicates Actuator High Control Circuit Group 2 Low Voltage.
Common causes: Common causes include Faulty Transmission Control Solenoid Valve, Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 454

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 18, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2670 Cadillac Description

The Transmission Control Module (TCM) receives information from a variety of sensors, switches, and serial data information from other control modules. This information is used to control a combination of solenoid valves to obtain the correct line pressure, gear ratio, and torque converter clutch operation. The Transmission Control Solenoid Valves are electro-mechanically operated valves. The valves are controlled by an electric current through the solenoid. The TCM high side driver 2 is located inside of the control solenoid valve assembly which has no serviceable parts. The high side driver 2 provides power to the Transmission Control Module pressure control solenoids and shift solenoids. The Diagnostic Trouble Code (DTC) will be set when the TCM detects an internal open or short to ground on the high side driver 2 for 1 s.

OBDII Code P2670 Cadillac - Actuator High Control Circuit Group 2 Low Voltage - AutoCodes.com — P2670 Cadillac Code - Actuator High Control Circuit Group 2 Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2670 Cadillac?

Faulty Transmission Control Solenoid Valve
Faulty Transmission Control Module (TCM)
Transmission Control Module harness is open or shorted
Transmission Control Module circuit poor electrical connection

How to Fix the DTC P2670 Cadillac?

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2670 Cadillac code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2670 Cadillac Code

1. What are the common symptoms of OBDII code P2670 on a Cadillac?

- Common symptoms include rough idling, reduced engine performance, and potential stalling of the vehicle.

2. What does the OBDII code P2670 Cadillac indicate?

- This code indicates a problem with the Actuator High Control Circuit Group 2 having low voltage, which can affect the engine's performance.

3. What are the possible causes of OBDII code P2670 on a Cadillac?

- Possible causes include a faulty actuator, wiring issues, a malfunctioning control module, or a weak electrical connection.

4. How can I diagnose the issue related to OBDII code P2670 on my Cadillac?

- Diagnosing the issue may involve checking the actuator, inspecting the wiring for any damage, testing the control module, and ensuring all electrical connections are secure.

5. Can I continue driving my Cadillac with OBDII code P2670 present?

- It is not recommended to drive the vehicle with this code present, as it can lead to further engine issues and potential breakdowns.

6. How can I repair OBDII code P2670 on my Cadillac?

- Repairing the issue may involve replacing the faulty actuator, repairing any damaged wiring, resetting the control module, and ensuring all electrical connections are properly secured.

7. Will resetting the OBDII code P2670 on my Cadillac make the issue go away?

- Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear.

8. Is it necessary to visit a mechanic for OBDII code P2670 repair on a Cadillac?

- While some DIY enthusiasts may attempt to diagnose and repair the issue themselves, it is recommended to seek professional help to ensure the problem is properly identified and fixed.

9. How much does it typically cost to repair OBDII code P2670 on a Cadillac?

- Repair costs can vary depending on the exact cause of the issue, but it is advisable to budget for parts and labor expenses when addressing this code.

10. Can preventative maintenance help prevent OBDII code P2670 from occurring on a Cadillac?

- Regular maintenance, including checking the actuator, inspecting wiring, and ensuring proper electrical connections, can help prevent issues that lead to OBDII code P2670.