Engine-CodesGeneric – C0890:07

C0890:07 Code - Control Module Voltage Reference Output 3 Circuit High Voltage

Quick Answer

The C0890:07 diagnostic trouble code (DTC) refers to the Control Module Voltage Reference Output 3 Circuit High Voltage. Common causes include Faulty wiring in the voltage reference output circuit, Malfunctioning control module, Short circuit in the circuit. 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
C0890:07 indicates Control Module Voltage Reference Output 3 Circuit High Voltage.
Common causes
Common causes include Faulty wiring in the voltage reference output circuit, Malfunctioning control module, Short circuit in the circuit.
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 11, 2024
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Code C0890:07 Description

The C0890:07 diagnostic trouble code (DTC) refers to the Control Module Voltage Reference Output 3 Circuit High Voltage. This code indicates that there is an issue with the voltage reference output circuit for Control Module 3 in the vehicle. The control module is responsible for regulating various systems in the vehicle, and when there is a high voltage output in this circuit, it can lead to a range of performance issues.

OBDII Code C0890:07 - Control Module Voltage Reference Output 3 Circuit High Voltage
C0890:07 Code - Control Module Voltage Reference Output 3 Circuit High Voltage

Common Causes of C0890:07

  1. Faulty wiring in the voltage reference output circuit
  2. Malfunctioning control module
  3. Short circuit in the circuit
  4. Defective voltage regulator

Symptoms of C0890:07

  1. Rough idling
  2. Hesitation during acceleration
  3. Stalling
  4. Poor fuel economy
  5. Difficulty starting the vehicle

How to Fix C0890:07

  1. Begin by diagnosing the specific cause of the high voltage output in the Control Module 3 circuit using a diagnostic scanner.
  2. Inspect the wiring and connections in the voltage reference output circuit for any signs of damage or corrosion.
  3. Test the control module and voltage regulator for proper functionality and replace if necessary.
  4. Repair any short circuits in the circuit and ensure all connections are secure.
  5. Clear the DTC and reset the vehicle's computer to see if the issue has been resolved.

Cost to Fix C0890:07

The cost estimate for repairing the Control Module Voltage Reference Output 3 Circuit High Voltage issue can vary depending on the specific cause of the problem and the extent of the repairs needed. In general, parts and labor for this type of repair may range from $200 to $500. It's important to note that diagnostic time and labor rates at auto repair shops can impact the final cost, with rates typically ranging between $80 and $150 per hour. Drivers should consult with a qualified mechanic to get a more accurate estimate based on their vehicle's make and model, as well as the local labor rates.

Tech Notes for C0890:07

C0890:03 Control Module Voltage Reference Output 3 Circuit Low Voltage

C0890:07 Control Module Voltage Reference Output 3 Circuit High Voltage

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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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