Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car has a special injector that helps clean the exhaust gases. This code means there's a problem with the electrical part of that injector.
This code indicates that the voltage in the circuit for the exhaust aftertreatment fuel injector is lower than expected.
The P2699 code is triggered when the Engine Control Module (ECM) detects a low voltage condition in the circuit of the exhaust aftertreatment fuel injector A. This injector is part of the system that reduces emissions by injecting fuel into the exhaust stream to burn off excess pollutants.
• Check Engine Light is on
• Reduced engine performance
• Increased emissions
• Faulty exhaust aftertreatment fuel injector
• Open or shorted injector wiring
• Poor electrical connection in the injector circuit
ECM: Engine Control Module
Injector: A device that introduces fuel into the engine or exhaust system
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the voltage and resistance of the injector circuit.
• Repair or replace damaged wiring or connectors.
• Replace the faulty exhaust aftertreatment fuel injector.
• Clear the code and test drive to ensure the repair was successful.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• Ford F-250
• Chevrolet Silverado
• Ram 2500
• Regularly inspect and maintain exhaust system components.
• Ensure proper fuel quality to avoid injector clogging.
• Perform periodic emissions system checks.
Sensor Issue
• Do not ignore the Check Engine Light; address the issue promptly.
• Consult with a professional mechanic if unsure about repairs.
Check with the vehicle manufacturer for emissions-related warranty coverage.
This code has become more common with the increased use of complex emissions control systems in modern vehicles.
Moderate – Addressing this issue promptly can prevent further emissions system damage.
Ignoring emissions-related issues can lead to fines and environmental harm.
• Engine running
• Warm operating temperature
The exhaust aftertreatment fuel injector is typically located near the exhaust manifold or catalytic converter.
Q: Can I drive with a P2699 code?
A: It's not recommended to drive for extended periods with this code, as it can lead to increased emissions and potential damage to the emissions system.
Q: Will a P2699 code affect my vehicle's performance?
A: Yes, it can cause reduced engine performance and increased emissions.
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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.
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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.
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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.