AutoCodes – Pontiac – P0694 Pontiac

P0694 Pontiac Code - Cooling Fan 2 Control Circuit High

Quick Answer

The Engine Control Module (ECM) grounds the low-speed relay, which is the Fan Low relay, and the high-speed relay, which is the Fan High relay, control circuits through an internal solid-state device called a driver. 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 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: P0694 Pontiac indicates Cooling Fan 2 Control Circuit High.
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: 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 400

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 Aug 13, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0694 Pontiac Description

The Engine Control Module (ECM) grounds the low-speed relay, which is the Fan Low relay, and the high-speed relay, which is the Fan High relay, control circuits through an internal solid-state device called a driver. The primary function of the driver is to supply the ground for the component being controlled. Each driver has a fault line that is monitored by the ECM. When the ECM is commanding a component ON, the voltage potential of the control circuit should be low, near 0 volts. When the ECM is commanding the control circuit to a component OFF, the voltage potential of the circuit should be high, near battery voltage. If the ECM detects that the actual state of the control circuit does not match the expected state, a Diagnostic Trouble Code (DTC) will set.

OBDII Code P0694 Pontiac - Cooling Fan 2 Control Circuit High - AutoCodes.com — P0694 Pontiac Code - Cooling Fan 2 Control Circuit High

What does this mean?

What are the Possible Causes of the DTC P0694 Pontiac?

Faulty Cooling Fan 2 Relay
Cooling Fan 2 Relay harness is open or shorted
Cooling Fan 2 Relay circuit poor electrical connection
Faulty Cooling Fan 1
Faulty Engine Control Module (ECM)

How to Fix the DTC P0694 Pontiac?

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 P0694 Pontiac 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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Need Help with the Code?

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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 P0694 Pontiac Code

1. What does the OBDII code P0694 mean on a Pontiac?

P0694 indicates a problem with the Cooling Fan 2 Control Circuit, specifically that the circuit has a high voltage condition.

2. What are the common symptoms of a P0694 code?

Symptoms may include the engine overheating, the cooling fan not functioning properly, or the Check Engine Light being illuminated.

3. What causes the P0694 code to appear?

Possible causes include a faulty cooling fan motor, damaged wiring or connectors in the fan circuit, a defective fan relay, or a malfunctioning powertrain control module (PCM).

4. Can I drive my Pontiac with a P0694 code?

Driving with a P0694 code is not recommended, as it could lead to engine overheating and potential damage if the cooling fan is not working correctly.

5. How do I diagnose a P0694 code?

Diagnosis typically involves checking the cooling fanâ€™s operation, inspecting the wiring and connectors for damage, testing the fan relay, and using a multimeter to measure voltage in the circuit.

6. How can I fix a P0694 code on my Pontiac?

Repairs may include replacing the cooling fan motor, repairing or replacing damaged wiring or connectors, replacing a faulty fan relay, or reprogramming or replacing the PCM if necessary.

7. How much does it cost to fix a P0694 code?

The repair cost can vary, but replacing a cooling fan motor typically costs $300-$700, while a relay replacement may cost $50-$150 plus labor.

8. Can a blown fuse trigger the P0694 code?

Yes, a blown fuse in the cooling fan circuit can prevent proper operation and cause a high voltage condition, triggering the P0694 code.

9. What tools are needed to troubleshoot a P0694 code?

Common tools include an OBDII scanner, a multimeter, and basic hand tools for inspecting and repairing wiring or components.

10. Will clearing the P0694 code fix the problem?

Clearing the code may temporarily turn off the Check Engine Light, but it wonâ€™t fix the underlying issue causing the code to appear. Proper diagnosis and repair are necessary.