AutoCodes – Generic – P1652

P1652 Code - Cooling Fan 2 Relay Control Circuit Conditions

Quick Answer

With the key on, the Powertrain Control Module (PCM) detects improper voltage level on ODM 'B' output 2 fault line circuit, all conditions met for 5-30 seconds (length of time to set varies by engine family) Common causes include Faulty Cooling Fan 2 Relay, Cooling Fan 2 Relay harness is open or shorted, Cooling Fan 2 Relay circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: P1652 indicates Cooling Fan 2 Relay Control Circuit Conditions.
Common causes: Common causes include Faulty Cooling Fan 2 Relay, Cooling Fan 2 Relay harness is open or shorted, Cooling Fan 2 Relay circuit poor electrical connection.
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

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Code Popularity 39,463

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 05, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1652 Description

OBDII Code P1652 - Cooling Fan 2 Relay Control Circuit Conditions - AutoCodes.com — P1652 Code - Cooling Fan 2 Relay Control Circuit Conditions

What does this mean?

What are the Possible Causes of the DTC P1652?

Faulty Cooling Fan 2 Relay
Cooling Fan 2 Relay harness is open or shorted
Cooling Fan 2 Relay circuit poor electrical connection

How to Fix the DTC P1652?

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 P1652 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.

Need more information about the P1652 code?

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Need Help with the Code?

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Information for Specific Makes

P1652 Audi — Transmission Control Module System Malfunction
P1652 Buick — Cooling Fan 2 Relay Control Circuit Conditions
P1652 Cadillac — Cooling Fan 2 Relay Control Circuit Conditions
P1652 Chevrolet — Cooling Fan 2 Relay Control Circuit Conditions
P1652 Dodge — 5V Ref Circuit
P1652 GMC — Cooling Fan 2 Relay Control Circuit Conditions
P1652 Hyundai — Ignition Switch Malfunction
P1652 Infiniti — Starter Motor System Communication
P1652 Mazda — Power Steering Pressure Switch Input Malfunction
P1652 Nissan — Starter Motor System Communication
P1652 Saab — Engine Control Module RAM Error
P1652 Toyota — Turbocharger 2 Air Control Solenoid Circuit Malfunction
P1652 Volkswagen — Transmission Control Module System Malfunction

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.