AutoCodes – Dodge – P2516 Dodge

P2516 Dodge Code - A/C Refrigerant Pressure Sensor 'B' Circuit Range/Performance

Quick Answer

The Powertrain Control Module (PCM) monitors the refrigerant pressure through the Air Condition (A/C) Pressure Sensor. Common causes include Low refrigerant, Too much refrigerant, Faulty Low Side Pressure Sensor. 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: P2516 Dodge indicates A/C Refrigerant Pressure Sensor 'B' Circuit Range/Performance.
Common causes: Common causes include Low refrigerant, Too much refrigerant, Faulty Low Side Pressure Sensor.
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 2,671

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 Jan 17, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2516 Dodge Description

The Powertrain Control Module (PCM) monitors the refrigerant pressure through the Air Condition (A/C) Pressure Sensor. The PCM supplies a 5V reference and a low reference to the sensor. Changes in the A/C refrigerant pressure causes the sensor signal to the PCM to vary. When the pressure is high, the signal is high. When the pressure is low, the signal is low. The PCM sets the OBII code when the signal from the sensor is out of factory specifications.

OBDII Code P2516 Dodge - A/C Refrigerant Pressure Sensor 'B' Circuit Range/Performance - AutoCodes.com — P2516 Dodge Code - A/C Refrigerant Pressure Sensor 'B' Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC P2516 Dodge?

Low refrigerant
Too much refrigerant
Faulty Low Side Pressure Sensor
Low Side Pressure Sensor harness is open or shorted
Low Side Pressure Sensor circuit poor electrical connection

How to Fix the DTC P2516 Dodge?

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 P2516 Dodge 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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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 P2516 Dodge Code

1. What does the OBDII code P2516 mean on a Dodge vehicle?

P2516 indicates an issue with the A/C Refrigerant Pressure Sensor 'B' Circuit, specifically that its range or performance is outside the expected parameters.

2. What are the common symptoms of the P2516 code?

Symptoms include poor A/C performance, the A/C not blowing cold air, potential engine performance issues, and the illumination of the check engine light.

3. What can cause the P2516 code to appear?

Common causes include a faulty A/C refrigerant pressure sensor, wiring or connector issues in the sensor circuit, low refrigerant levels, or a malfunctioning A/C compressor.

4. Can low refrigerant levels trigger the P2516 code?

Yes, low refrigerant levels can cause abnormal pressure readings, which may result in the P2516 code being set.

5. How do you diagnose the P2516 code?

Diagnosis involves checking the refrigerant pressure sensor, inspecting wiring and connectors for damage or corrosion, verifying refrigerant levels, and using a scan tool to monitor sensor readings.

6. Can I still drive my Dodge with the P2516 code active?

While the vehicle may still be drivable, the A/C system may not function properly, and ignoring the code could lead to further damage to the A/C system.

7. How is the P2516 code repaired?

Repairs may include replacing the A/C refrigerant pressure sensor, repairing damaged wiring or connectors, recharging the refrigerant, or replacing the A/C compressor if necessary.

8. How much does it cost to fix the P2516 code?

Costs vary depending on the repair, with sensor replacement typically costing $100-$300, while more extensive repairs like compressor replacement may cost $500-$1,500.

9. Can I fix the P2516 code myself?

If you're experienced with vehicle electrical systems, you may be able to inspect and replace the sensor or repair wiring. However, refrigerant-related repairs require specialized tools and knowledge.

10. Does resetting the code with a scan tool fix the P2516 issue?

Resetting the code clears the warning temporarily, but unless the underlying issue is addressed, the code will likely return.