AutoCodes – Cadillac – P1700 Cadillac

P1700 Cadillac Code - Transmission Control Module Requested Malfunction Indicator Lamp Conditions

Quick Answer

This Diagnostic Trouble Code (DTC) indicates that a transmission related OBDII failure has occurred. Common causes include Check for codes in Transmission Control Module (TCM). 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: P1700 Cadillac indicates Transmission Control Module Requested Malfunction Indicator Lamp Conditions.
Common causes: Common causes include Check for codes in Transmission Control Module (TCM).
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 9,247

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 07, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
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Code P1700 Cadillac Description

This Diagnostic Trouble Code (DTC) indicates that a transmission related OBDII failure has occurred. Transmission Control Module (TCM) controls a dedicated service transmission light, which is illuminated when a failure is reported by certain non-emission related TCM diagnostics. TCM has no direct control of engine MIL, but if transmission fault occurs that is emission related, MIL must illuminate. A MIL request circuit between Engine Control Module (ECM) and TCM provides a means for illuminating MIL, even though the fault was detected by TCM. This circuit is increased to battery voltage within ECM. To illuminate MIL, TCM lowers circuit voltage. ECM detects this and DTC is set, which illuminates MIL. The DTC will set when an OBDII transmission DTC has been stored by TCM.

OBDII Code P1700 Cadillac - Transmission Control Module Requested Malfunction Indicator Lamp Conditions - AutoCodes.com — P1700 Cadillac Code - Transmission Control Module Requested Malfunction Indicator Lamp Conditions

What does this mean?

What are the Possible Causes of the DTC P1700 Cadillac?

Check for codes in Transmission Control Module (TCM)

How to Fix the DTC P1700 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 P1700 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.