AutoCodes – Pontiac – P1174 Pontiac

P1174 Pontiac Code - Fuel Trim Cylinder Balance Bank 1

Quick Answer

The Fuel Trim Cylinder Balance diagnostic detects a rich or lean cylinder to cylinder air/fuel ratio imbalance in each bank. Common causes include Clogged Fuel Injectors, Faulty Oxygen sensor, Ignition problem. 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: P1174 Pontiac indicates Fuel Trim Cylinder Balance Bank 1.
Common causes: Common causes include Clogged Fuel Injectors, Faulty Oxygen sensor, Ignition problem.
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 30,712

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 04, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1174 Pontiac Description

The Fuel Trim Cylinder Balance diagnostic detects a rich or lean cylinder to cylinder air/fuel ratio imbalance in each bank. The diagnostic monitors the pre-catalyst heated oxygen sensor (HO2S) signal's frequency and amplitude characteristics by calculating an accumulated voltage over a predetermined sample period. An imbalance is indicated when multiple samples of the accumulated voltage are consistently higher than the desired value.

OBDII Code P1174 Pontiac - Fuel Trim Cylinder Balance Bank 1 - AutoCodes.com — P1174 Pontiac Code - Fuel Trim Cylinder Balance Bank 1

What does this mean?

What are the Possible Causes of the DTC P1174 Pontiac?

Clogged Fuel Injectors
Faulty Oxygen sensor
Ignition problem
Fuel injection problem
Engine mechanical condition

How to Fix the DTC P1174 Pontiac?

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 does this mean?

Code Tech Notes

The P1174 code sometimes is triggered by clogged fuel injectors. Start by using high octane fuel and/or fuel additive to clean injectors. If the problem persists fuel injectors may need to be replaced.

There is a Factory Service Bulletin for the following Pontiac models:
2000-2001 Pontiac Transport
2000-2002 Pontiac Firebird
2000-2008 Pontiac Bonneville
2000-2008 Pontiac Grand Am
2000-2008 Pontiac Grand Prix
2000-2008 Pontiac Sunfire
2001-2008 Pontiac Aztek
2002-2008 Pontiac Montana
2000-2008 Pontiac Factory Service Bulletin OBDII Code P1174

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1174 Pontiac 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 P1174 Pontiac code?

Need more information on how to fix the P1174 Pontiac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1174 Pontiac code diagnosed by a professional: Find a repair shop in your area

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 P1174 Pontiac Code

1. What does OBDII code P1174 for a Pontiac mean?

- OBDII code P1174 indicates a Fuel Trim Cylinder Balance Bank 1 issue on a Pontiac vehicle.

2. What are the common symptoms of OBDII code P1174 on a Pontiac?

- Common symptoms of code P1174 may include rough idling, decreased fuel efficiency, and possible engine misfires.

3. What are the possible causes of OBDII code P1174 on a Pontiac?

- The code P1174 on a Pontiac can be triggered by issues such as a vacuum leak, faulty oxygen sensor, clogged fuel injectors, or a malfunctioning mass airflow sensor.

4. How can I diagnose the OBDII code P1174 on my Pontiac?

- To diagnose code P1174, it's recommended to perform a thorough inspection of the oxygen sensors, fuel injectors, vacuum lines, and air intake system. Using an OBDII scanner to read live data can also help pinpoint the issue.

5. Can I drive my Pontiac with OBDII code P1174?

- It is not advisable to drive your Pontiac with an active P1174 code, as it can lead to potential engine damage and decreased performance. It's best to address the issue promptly.

6. How can I repair OBDII code P1174 on my Pontiac?

- Repairing code P1174 may involve fixing any vacuum leaks, replacing faulty oxygen sensors, cleaning or replacing clogged fuel injectors, or addressing issues with the mass airflow sensor.

7. Will resetting the OBDII code P1174 on my Pontiac fix the issue?

- Simply resetting the code may temporarily clear the check engine light, but it will not fix the underlying problem causing code P1174. It's important to diagnose and address the root cause of the issue.

8. How much does it cost to repair OBDII code P1174 on a Pontiac?

- The cost of repairing code P1174 on a Pontiac can vary depending on the specific cause of the issue and the labor rates in your area. It's recommended to consult a professional mechanic for an accurate estimate.

9. Can a DIY enthusiast fix OBDII code P1174 on a Pontiac?

- While some basic repairs related to code P1174 may be possible for DIY enthusiasts, diagnosing and fixing complex issues may require specialized tools and expertise. It's advisable to seek professional help if needed.

10. Is OBDII code P1174 a common problem in Pontiac vehicles?

- OBDII code P1174 related to Fuel Trim Cylinder Balance Bank 1 is not uncommon in Pontiac vehicles, and it often indicates issues with the air-fuel mixture or combustion process that need attention to ensure optimal engine performance.