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P0690 Dodge Code - Auto Shutdown Relay Control Circuit High

Quick Answer

The P0690 diagnostic trouble code (DTC) indicates a problem with the Auto Shutdown (ASD) relay control circuit in Dodge vehicles. Common causes include Faulty Auto Shutdown relay, Damaged or corroded wiring in the ASD relay control circuit, Malfunctioning Powertrain Control Module (PCM). 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
P0690 Dodge indicates Auto Shutdown Relay Control Circuit High.
Common causes
Common causes include Faulty Auto Shutdown relay, Damaged or corroded wiring in the ASD relay control circuit, Malfunctioning Powertrain Control Module (PCM).
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.
What is this?
Table of contents Created and updated by William Orellana on Oct 26, 2024
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Code P0690 Dodge Description

The P0690 diagnostic trouble code (DTC) indicates a problem with the Auto Shutdown (ASD) relay control circuit in Dodge vehicles. The ASD relay is crucial for regulating power to various engine components, including the fuel pump, ignition system, and other critical sensors. When the PCM (Powertrain Control Module) detects a high voltage or an open circuit in the ASD relay control circuit, it triggers this code.

OBDII Code P0690 Dodge - Auto Shutdown Relay Control Circuit High
P0690 Dodge Code - Auto Shutdown Relay Control Circuit High

Common Causes of P0690 Dodge

  1. Faulty Auto Shutdown relay.
  2. Damaged or corroded wiring in the ASD relay control circuit.
  3. Malfunctioning Powertrain Control Module (PCM).
  4. Poor electrical connections or grounding issues.
  5. Short circuits or open circuits in the relay circuit.

Symptoms of P0690 Dodge

  1. Engine stalling or failure to start.
  2. Intermittent loss of power while driving.
  3. Check Engine Light (CEL) illuminated on the dashboard.
  4. Inconsistent operation of engine components, such as the fuel pump or ignition system.
  5. Difficulty in diagnosing other related electrical issues due to the ASD relay's influence on multiple systems.

How to Fix P0690 Dodge

  1. Diagnostic Testing: Begin with a thorough diagnostic scan to confirm the P0690 code and check for any additional codes that may provide further insight into the issue.
  2. Visual Inspection: Inspect the ASD relay, wiring, and connectors for signs of damage, corrosion, or loose connections. Pay special attention to the integrity of the circuit.
  3. Relay Replacement: If the relay is found to be faulty, replace it with a new one. Ensure that the new relay is compatible with the vehicle's specifications.
  4. Wiring Repair: If damaged wiring or connectors are identified, repair or replace them as necessary to restore proper electrical flow.
  5. PCM Testing: If the problem persists after replacing the relay and repairing wiring, further testing of the PCM may be required to determine if it is functioning correctly.

Cost to Fix P0690 Dodge

The typical repair costs for addressing a P0690 code can vary widely based on the specific issues identified during diagnosis. Generally, you might expect to pay between $100 and $300 for parts and labor combined. This estimate includes the cost of a new ASD relay (usually $20 to $50) and labor charges, which can range from $80 to $150 per hour depending on the shop's location and expertise. In metropolitan areas or at dealerships, rates may be higher, while independent shops often offer more competitive pricing. It's advisable to check local rates for a more precise estimate, as the total cost will depend on the complexity of the repairs needed and the time required for diagnosis.

What does this mean?

Tech Notes for P0690 Dodge

Check all the ECM fuses, if the fuses are OK try replacing the ASD relay.

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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.

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