Engine-CodesCadillac – P1237 Cadillac

P1237 Cadillac Code - Injector Circuit Cylinder 6 Intermittent

Quick Answer

The P1237 code for Cadillac vehicles indicates an issue with the injector circuit in cylinder 6 that is intermittent. Common causes include Faulty fuel injector in cylinder 6, Wiring harness issues, Poor connections or corrosion. 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
P1237 Cadillac indicates Injector Circuit Cylinder 6 Intermittent.
Common causes
Common causes include Faulty fuel injector in cylinder 6, Wiring harness issues, Poor connections or corrosion.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1237 Cadillac Description

The P1237 code for Cadillac vehicles indicates an issue with the injector circuit in cylinder 6 that is intermittent. In simpler terms, this means that there is a problem with the fuel injector related to the engine cylinder 6, and the malfunction is not constant but occurs sporadically. The fuel injector is a crucial component responsible for delivering the precise amount of fuel into the combustion chamber for efficient engine operation. When the injector circuit in cylinder 6 is intermittent, it can lead to various performance issues and potentially cause long-term damage if left unresolved.

OBDII Code P1237 Cadillac - Injector Circuit Cylinder 6 Intermittent
P1237 Cadillac Code - Injector Circuit Cylinder 6 Intermittent

Common Causes of P1237 Cadillac

  1. Faulty fuel injector in cylinder 6
  2. Wiring harness issues
  3. Poor connections or corrosion
  4. Malfunctioning engine control module (ECM)
  5. Injector driver circuit problems

Symptoms of P1237 Cadillac

  1. Rough idling
  2. Engine misfires
  3. Decreased fuel efficiency
  4. Hesitation or stalling
  5. Lack of power

How to Fix P1237 Cadillac

  1. Diagnose the specific cause of the issue by using a scan tool to pinpoint the exact problem within the injector circuit.
  2. Inspect the wiring harness and connections for any signs of damage, corrosion, or loose connections. Repair or replace as needed.
  3. Test the fuel injector in cylinder 6 to ensure it is functioning properly. Replace the injector if it is faulty.
  4. Check the ECM for any faults or errors and reset if necessary.
  5. Clear the trouble code from the vehicle's computer and perform a test drive to confirm that the issue has been resolved.

Cost to Fix P1237 Cadillac

The typical repair costs for addressing the P1237 code on a Cadillac vehicle can range from $200 to $600, depending on the specific cause of the issue and the labor rates at the auto repair shop. Parts such as a new fuel injector, wiring harness, or ECM may need to be purchased, adding to the overall cost. It is important to note that diagnosis time and labor rates can vary, so it is recommended to obtain quotes from multiple shops to ensure a fair price.

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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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