AutoCodes – Cadillac – P0370 Cadillac

P0370 Cadillac Code - Timing Reference High Resolution System Performance

Quick Answer

The optical sensor provides a high-resolution signal to Powertrain Control Module (PCM) by counting pulses on the sensor disk located in the injection pump. Common causes include Faulty Injection Pump, Injection Pump harness is open or shorted, Injection Pump 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: P0370 Cadillac indicates Timing Reference High Resolution System Performance.
Common causes: Common causes include Faulty Injection Pump, Injection Pump harness is open or shorted, Injection Pump 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 342

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 Apr 21, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0370 Cadillac Description

The optical sensor provides a high-resolution signal to Powertrain Control Module (PCM) by counting pulses on the sensor disk located in the injection pump. High resolution is an important input by PCM for fuel control and timing. The test monitors the number of high-resolution pulses that have been missed (not detected). The number of pulses detected since the last pump cam pulse is compared to the number of pulses that should have occurred. The Diagnostic Trouble Code (DTC) will be set when a number of high-resolution pulses (internal to PCM) are missing per every 8 cam reference pulses.

OBDII Code P0370 Cadillac - Timing Reference High Resolution System Performance - AutoCodes.com — P0370 Cadillac Code - Timing Reference High Resolution System Performance

What does this mean?

What are the Possible Causes of the DTC P0370 Cadillac?

Faulty Injection Pump
Injection Pump harness is open or shorted
Injection Pump circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P0370 Cadillac?

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 P0370 Cadillac 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 P0370 Cadillac code?

Need more information on how to fix the P0370 Cadillac 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 P0370 Cadillac Code

1. What are the common symptoms of OBDII code P0370 in a Cadillac related to Timing Reference High Resolution System Performance?

The common symptoms include rough idling, engine misfires, loss of power, and potentially stalling of the vehicle.

2. What could be the possible causes of OBDII code P0370 in a Cadillac?

Possible causes include a faulty crankshaft position sensor, issues with the camshaft position sensor, wiring problems, or a malfunctioning Engine Control Module (ECM).

3. How can I diagnose OBDII code P0370 in my Cadillac?

Diagnosing the issue involves using a scan tool to read the code, checking the crankshaft position sensor and camshaft position sensor for proper functioning, and inspecting the wiring for any damage or connectivity issues.

4. Is it safe to continue driving my Cadillac with OBDII code P0370 present?

It is not recommended to continue driving your Cadillac with this code present, as it can lead to further engine damage and potentially unsafe driving conditions.

5. How can I repair OBDII code P0370 in my Cadillac?

To repair this code, you may need to replace the faulty crankshaft position sensor or camshaft position sensor, repair any damaged wiring, or reprogram the ECM as needed.

6. Can a DIY enthusiast fix OBDII code P0370 in a Cadillac?

While some repairs related to this code can be done by a DIY enthusiast, it is recommended to have a professional mechanic diagnose and repair the issue to ensure it is properly fixed.

7. How much does it typically cost to repair OBDII code P0370 in a Cadillac?

The cost of repairing this code can vary depending on the specific cause of the issue, but it may range from $100 to $500 or more, including parts and labor.

8. Are there any preventative measures to avoid OBDII code P0370 in a Cadillac?

Regular maintenance of your Cadillac, including checking and replacing sensors as needed, can help prevent issues that may trigger this code.

9. Can a low battery voltage trigger OBDII code P0370 in a Cadillac?

Yes, a low battery voltage can potentially cause issues with the sensors and trigger this code, so it is important to ensure your Cadillac's battery is in good condition.

10. How long does it typically take to repair OBDII code P0370 in a Cadillac?

The repair time can vary depending on the specific cause and complexity of the issue, but it may take a few hours to a full day to diagnose and repair OBDII code P0370 in a Cadillac.