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Code P0937

Quick reference

P0937 at a glance

Plain-language meaning
This code means that the car's computer is having trouble reading the temperature of the hydraulic oil, which is like the car's special fluid that helps certain parts move smoothly.
Urgency
Moderate – While it may not cause immediate damage, addressing this issue promptly can prevent further complications.
Difficulty
Moderate
System
Sensor Issue
Tools mentioned
OBD-II scanner, Multimeter, Basic hand tools

This summary uses the existing diagnostic information shown in full below.

Laymans terms

This code means that the car's computer is having trouble reading the temperature of the hydraulic oil, which is like the car's special fluid that helps certain parts move smoothly.

Explanation

The P0937 code indicates a malfunction in the circuit that monitors the hydraulic oil temperature sensor, which is crucial for maintaining proper hydraulic system performance.

Technical description

The P0937 code is triggered when the Powertrain Control Module (PCM) detects a problem with the hydraulic oil temperature sensor circuit. This sensor provides data to the PCM about the temperature of the hydraulic oil, which is essential for the proper operation of systems like the transmission or power steering. If the sensor or its circuit fails, it can lead to incorrect temperature readings and potential system malfunctions.

Symptoms

• Illuminated check engine light

• Erratic transmission shifting

• Overheating of hydraulic systems

Common Causes

• Faulty hydraulic oil temperature sensor

• Damaged wiring or connectors in the sensor circuit

• PCM issues or software glitches

Glossary

PCM: Powertrain Control Module, the vehicle's main computer that controls engine and transmission functions.

OBD-II: On-Board Diagnostics, a standardized system in vehicles for self-diagnosing and reporting.

Diagnosis steps

• Use an OBD-II scanner to confirm the code.

• Inspect the wiring and connectors for damage or corrosion.

• Test the hydraulic oil temperature sensor for proper operation.

Repair procedures

• Replace the hydraulic oil temperature sensor if faulty.

• Repair or replace damaged wiring or connectors.

• Update or reprogram the PCM if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$150 - $400

Difficulty level

Moderate

Commonly affected vehicles

• Ford F-150

• Chevrolet Silverado

• Dodge Ram

Preventive measures

• Regular maintenance of the hydraulic system

• Routine checks of wiring and connectors

• Timely software updates for the PCM

Error code type

Sensor Issue

User experience recommendations

• Do not ignore the check engine light.

• Seek professional diagnosis if unsure.

• Regularly monitor vehicle performance.

Warranty information

Check with your vehicle manufacturer as sensor-related issues may be covered under warranty.

Historical data

This code has been associated with transmission issues in vehicles with complex hydraulic systems.

Urgency level

Moderate – While it may not cause immediate damage, addressing this issue promptly can prevent further complications.

Testing conditions

• Engine at operating temperature

• Vehicle in park or neutral

Component location

The hydraulic oil temperature sensor is typically located in or near the hydraulic fluid reservoir or transmission housing.

FAQs

Q: Can I drive with a P0937 code?
A: It's not recommended to drive for extended periods with this code, as it can lead to transmission or hydraulic system issues.

Q: How do I reset the P0937 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is resolved, the code should not return.

Optional diagnostic gear

Tools that may help diagnose P0937

FOXWELL Multi-System Scanner diagnostic tool illustration

Pro · Four-system diagnostics

FOXWELL Multi-System Scanner

A handheld scanner aimed at engine, transmission, ABS, and airbag diagnostic work.

Chassis and ABS faults usually need a scanner that can read brake-system data directly.

View on Amazon
EPAuto 1/2" Torque Wrench diagnostic tool illustration

Universal · Torque wrench

EPAuto 1/2" Torque Wrench

Useful when reassembly torque matters for wheel, suspension, and under-hood fasteners.

Useful when wheel, hub, or suspension hardware needs correct reassembly torque.

View on Amazon
MaxxHaul Vehicle Ramps diagnostic tool illustration

Universal · Drive-on ramps

MaxxHaul Vehicle Ramps

Helpful for safer access underneath the vehicle during exhaust, EVAP, and underbody inspection work.

Helpful for safer access during underbody inspection work.

View on Amazon

These are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.

Source: ezOBD2 diagnostic database
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