• Check Engine Light is on
• Rough idle
• Poor fuel economy
• Engine misfire
• Faulty fuel injector
• Vacuum leak
• Mass airflow sensor malfunction
• Oxygen sensor failure
• Exhaust leak
Fuel Trim: Adjustments made by the engine control module to the air-fuel mixture.
Bank 1: The side of the engine with cylinder number 1.
• P0171
• P0174
Fuel Trim Cylinder Balance Bank 1
This code means that the car's computer has detected an imbalance in the fuel mixture in one part of the engine. It's like if one part of a cake had too much sugar and another part didn't have enough.
The P1174 code indicates that the engine control module (ECM) has detected an imbalance in the fuel trim for one of the cylinders in bank 1, which means the air-fuel mixture is not consistent across all cylinders.
The P1174 code is set when the ECM detects a variation in the fuel trim for a specific cylinder in bank 1. This can occur due to issues such as a faulty fuel injector, a vacuum leak, or a problem with the mass airflow sensor. The ECM continuously monitors the fuel trim adjustments to maintain optimal engine performance and emissions.
• Check for any other diagnostic trouble codes.
• Inspect the fuel injectors for proper operation.
• Check for vacuum leaks in the intake system.
• Test the mass airflow sensor.
• Inspect the oxygen sensors for proper function.
• Replace or clean faulty fuel injectors.
• Repair any vacuum leaks found.
• Replace the mass airflow sensor if faulty.
• Replace faulty oxygen sensors.
• Repair any exhaust leaks.
• OBD-II scanner
• Fuel pressure gauge
• Multimeter
• Vacuum gauge
• Smoke machine for leak detection
$150 - $500
Moderate
• Chevrolet Malibu
• Pontiac Grand Prix
• Buick Regal
• Regular maintenance and inspection of fuel system components.
• Ensure air filters are clean and replaced regularly.
• Use high-quality fuel to prevent injector clogging.
Engine Performance
• Have the vehicle inspected by a professional mechanic.
• Avoid driving the vehicle until the issue is resolved to prevent further damage.
Check with the vehicle manufacturer for specific warranty coverage related to emissions and engine performance issues.
The P1174 code has been commonly associated with GM vehicles and typically indicates issues with fuel delivery or air intake systems.
Moderate – It is important to address this issue to prevent potential engine damage and to ensure optimal performance.
Driving with a malfunctioning engine can lead to increased emissions and may not comply with local environmental regulations.
• Engine at operating temperature
• Vehicle in closed-loop operation
The camshaft position sensor is typically located near the top of the engine, often on the cylinder head or camshaft housing.
Q: Can I drive my car with a P1174 code?
A: It's not recommended to drive for extended periods with this code active, as it can lead to further engine issues.
Q: What happens if I ignore the P1174 code?
A: Ignoring the code can result in poor engine performance, reduced fuel efficiency, and potential engine damage.
