Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car's computer thinks there's too much fuel being used before it gets cleaned up by the first part of the exhaust system on one side of the engine.
The code indicates that the fuel mixture is too rich, meaning there is too much fuel and not enough air in the combustion process before the catalytic converter on Bank 1.
This code is set when the engine control module (ECM) detects that the fuel trim for the pre-catalyst system on Bank 1 is too rich. This means the ECM is trying to reduce fuel delivery to maintain the correct air-fuel ratio, but the system is still detecting a rich condition.
• Check Engine Light is on
• Poor fuel economy
• Rough idle
• Faulty fuel injector
• Leaking fuel pressure regulator
• Clogged air filter
Fuel Trim: Adjustments made by the engine control module to the amount of fuel being injected into the engine.
Catalytic Converter: A device that reduces harmful emissions from the engine's exhaust.
• Check for any other related fault codes
• Inspect the air filter and intake system for obstructions
• Test the fuel pressure and inspect injectors
• Replace or clean the fuel injectors
• Repair or replace the fuel pressure regulator
• Replace the air filter if clogged
• OBD-II scanner
• Fuel pressure gauge
• Basic hand tools
$150 - $500
Moderate
• BMW 3 Series
• Audi A4
• Volkswagen Passat
• Regularly replace air filters
• Use quality fuel
• Perform routine engine maintenance
Engine Performance
• Avoid driving aggressively until the issue is resolved
• Monitor fuel consumption for any changes
Check your vehicle's warranty for coverage on emissions-related components.
This code has been commonly associated with vehicles that have high mileage and may indicate wear in the fuel system components.
Moderate – It should be addressed soon to avoid potential damage to the catalytic converter.
Ignoring this issue could lead to increased emissions and potential failure of the catalytic converter, which is costly to replace.
• Engine at operating temperature
• Vehicle idling
The components related to this code are located in the engine bay, specifically the fuel injectors and the intake system on Bank 1.
Q: Can I drive my car with a P1092 code?
A: It's best to address the issue soon, as driving with this code can lead to increased emissions and potential damage to the catalytic converter.
Q: What does 'Bank 1' mean?
A: Bank 1 refers to the side of the engine that contains cylinder number 1.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
View on Amazon
Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.
Fitment Required · Vehicle-fitment part
Relevant when catalyst-efficiency or emissions faults persist after proper diagnosis.
Catalyst-efficiency faults sometimes point toward converter problems after proper testing.
Catalytic converters are highly vehicle-specific and should not be purchased by code alone.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.