Engine-CodesCadillac – P1607 Cadillac

P1607 Cadillac Code - Serial Communication Problem With Devise 7

Quick Answer

The P1607 diagnostic trouble code (DTC) for Cadillac vehicles indicates a serial communication problem with device 7. Common causes include Loose or corroded wiring connections, Faulty sensor or module, Software glitch in the vehicle's computer systems. 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
P1607 Cadillac indicates Serial Communication Problem With Devise 7.
Common causes
Common causes include Loose or corroded wiring connections, Faulty sensor or module, Software glitch in the vehicle's computer systems.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1607 Cadillac Description

The P1607 diagnostic trouble code (DTC) for Cadillac vehicles indicates a serial communication problem with device 7. In simpler terms, this code suggests that there is an issue with the communication between the vehicle's onboard computer systems and a specific device, likely a sensor or module. This breakdown in communication can have various implications for the vehicle's performance and functionality.

OBDII Code P1607 Cadillac - Serial Communication Problem With Devise 7
P1607 Cadillac Code - Serial Communication Problem With Devise 7

Common Causes of P1607 Cadillac

  1. Loose or corroded wiring connections
  2. Faulty sensor or module
  3. Software glitch in the vehicle's computer systems
  4. Water damage or exposure to the elements
  5. Electrical interference or signal disruption

Symptoms of P1607 Cadillac

  1. Rough idling or engine hesitation
  2. Stalling or difficulty starting the vehicle
  3. Decreased fuel efficiency
  4. Sluggish acceleration
  5. Issues with transmission shifting

How to Fix P1607 Cadillac

  1. Begin by conducting a thorough visual inspection of the wiring and connectors associated with device 7 to check for any signs of damage or corrosion.
  2. Use a diagnostic scan tool to retrieve freeze frame data and any additional codes that may provide further insight into the communication problem.
  3. Test the sensor or module associated with device 7 to determine if it is functioning correctly or needs replacement.
  4. Inspect the vehicle's computer systems for any software glitches that may be affecting communication with the device.
  5. Clear the DTC from the vehicle's memory after completing repairs and perform a test drive to ensure that the issue has been resolved.

Cost to Fix P1607 Cadillac

The typical repair costs for resolving a P1607 code on a Cadillac can vary depending on the specific cause of the communication problem. In general, parts and labor for this type of repair can range from $150 to $500. However, it's important to note that these costs can fluctuate based on factors such as the location of the repair shop, the vehicle's make and model, and the type of engine. Diagnostic time and labor rates at auto repair shops typically range from $80 to $150 per hour, with rates potentially higher at dealerships or in metropolitan areas. It is advisable to consult with a local repair shop for a more precise estimate tailored to your specific circumstances.

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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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