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Engine-Codes – Dodge – P1074 Dodge

P1074 Dodge Code - A/C Select Circuit High

Quick Answer

The P1074 code indicates a problem with the A/C select circuit in Dodge vehicles, specifically signaling that the circuit is reading a high voltage condition. Common causes include Short circuit or open circuit in the A/C select wiring harness, Faulty climate control module or A/C control head, Damaged or corroded connectors affecting electrical signals. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means
P1074 Dodge indicates A/C Select Circuit High.
Common causes
Common causes include Short circuit or open circuit in the A/C select wiring harness, Faulty climate control module or A/C control head, Damaged or corroded connectors affecting electrical signals.
Severity
Low - monitor the vehicle and repair when practical.
Can I drive?
The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
What is this?
Table of contents Created and updated by William Orellana on Oct 23, 2024
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Code P1074 Dodge Description

The P1074 code indicates a problem with the A/C select circuit in Dodge vehicles, specifically signaling that the circuit is reading a high voltage condition. This code is typically associated with the climate control system, which is responsible for regulating the cabin temperature and air distribution. When the A/C select circuit is malfunctioning, it can lead to improper functioning of the air conditioning system, affecting the vehicle's comfort and climate control capabilities.

OBDII Code P1074 Dodge - A/C Select Circuit High
P1074 Dodge Code - A/C Select Circuit High

Common Causes of P1074 Dodge

  1. Short circuit or open circuit in the A/C select wiring harness.
  2. Faulty climate control module or A/C control head.
  3. Damaged or corroded connectors affecting electrical signals.
  4. Malfunctioning A/C compressor or related components.
  5. Issues with the vehicle's battery or charging system causing voltage irregularities.

Symptoms of P1074 Dodge

  1. A/C system fails to engage or operate.
  2. Inconsistent cabin temperature; hot air may blow when A/C is set to cool.
  3. Blower motor operates intermittently or at incorrect speeds.
  4. Climate control display shows error messages or malfunctions.
  5. Unusual noises from the A/C system, indicating potential mechanical failure.

How to Fix P1074 Dodge

  1. Visual Inspection: Begin with a thorough inspection of the wiring harness and connectors associated with the A/C select circuit for any signs of damage, corrosion, or loose connections.
  2. Electrical Testing: Use a multimeter to check for proper voltage and continuity in the A/C select circuit. This will help identify any shorts or opens in the wiring.
  3. Module Diagnosis: If the wiring appears intact, test the climate control module for faults. This may involve using a diagnostic scanner to retrieve additional codes and data.
  4. Component Replacement: If a faulty component is identified, such as the climate control module or A/C compressor, replace it with a new or refurbished part.
  5. System Calibration: After repairs, recalibrate the climate control system to ensure proper operation and functionality of the A/C system.

Cost to Fix P1074 Dodge

Repair costs for a P1074 code can vary significantly based on the specific diagnosis and repairs needed. Generally, the cost may range from $150 to $600. This estimate includes parts and labor, with labor costs typically falling between $80 and $150 per hour. Factors such as location, vehicle make and model, and engine type can influence the final cost. In metropolitan areas or at dealerships, labor rates may be higher, while independent shops may offer more competitive pricing. It's advisable to obtain quotes from local repair shops for a more accurate estimate tailored to your specific situation.

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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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