AutoCodes – RAM – P0237 RAM

P0237 RAM Code - MAP Sensor Too High Too Long

Quick Answer

The Manifold Air Pressure (MAP) sensor voltage is monitored when the engine speed is more than 416 RPM, but less than 3520 RPM and battery voltage is more than 10.4 volts. Common causes include Faulty Manifold Air Pressure (MAP) sensor, Manifold Air Pressure sensor harness is open or shorted, Manifold Air Pressure sensor circuit poor electrical connection. 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: P0237 RAM indicates MAP Sensor Too High Too Long.
Common causes: Common causes include Faulty Manifold Air Pressure (MAP) sensor, Manifold Air Pressure sensor harness is open or shorted, Manifold Air Pressure sensor circuit poor electrical connection.
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 771

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 Aug 06, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0237 RAM Description

The Manifold Air Pressure (MAP) sensor voltage is monitored when the engine speed is more than 416 RPM, but less than 3520 RPM and battery voltage is more than 10.4 volts. The Diagnostic Trouble Code (DTC) may be stored if the Engine Control Module (ECM) senses MAP sensor signal voltage is less than .1 volt for 2 seconds with the engine running.

OBDII Code P0237 RAM - MAP Sensor Too High Too Long - AutoCodes.com — P0237 RAM Code - MAP Sensor Too High Too Long

What does this mean?

What are the Possible Causes of the DTC P0237 RAM?

Faulty Manifold Air Pressure (MAP) sensor
Manifold Air Pressure sensor harness is open or shorted
Manifold Air Pressure sensor circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0237 RAM?

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 P0237 RAM 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.

Need more information about the P0237 RAM code?

Need more information on how to fix the P0237 RAM code? Get Access to Factory Service Manuals

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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 P0237 RAM Code

1. What does the OBDII code P0237 mean in a RAM vehicle?

P0237 indicates an issue where the manifold absolute pressure (MAP) sensor is reporting a voltage that is too low for too long, suggesting a potential problem with the sensor or its associated systems.

2. What are the common symptoms of the P0237 code in a RAM?

Typical symptoms include poor engine performance, reduced power, rough idling, increased fuel consumption, and in some cases, the engine entering limp mode.

3. What causes the P0237 code in a RAM vehicle?

Common causes include a faulty MAP sensor, a damaged or corroded sensor connector, wiring issues such as shorts or breaks, or a problem with the engine control module (ECM).

4. Can a dirty air filter trigger the P0237 code?

While a dirty air filter is unlikely to directly cause P0237, restricted airflow can affect engine performance and potentially lead to related issues.

5. How do you diagnose the P0237 code in a RAM?

Start by using a scan tool to confirm the code, visually inspect the MAP sensor and its wiring for damage, and test the sensor's voltage and ground connections with a multimeter.

6. Can I drive my RAM with the P0237 code active?

Driving with P0237 is not recommended as it can lead to reduced engine performance and potentially cause further damage if left unaddressed.

7. How do you fix the P0237 code in a RAM?

Repairs may include replacing the MAP sensor, repairing damaged wiring or connectors, cleaning the sensor, or updating/reflashing the ECM if necessary.

8. How much does it cost to fix the P0237 code?

The cost can vary but typically ranges from $50 to $200 for a MAP sensor replacement, plus labor costs if handled by a professional.

9. Can a vacuum leak cause the P0237 code?

Yes, a vacuum leak can affect the MAP sensor's readings and potentially trigger the P0237 code, though it is not the most common cause.

10. How can I prevent the P0237 code from reoccurring in my RAM?

Regular maintenance, including inspecting the MAP sensor and wiring, cleaning intake components, and addressing any vacuum leaks, can help prevent the code from reoccurring.