Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer thinks that one side of the engine is not getting enough fuel, like when you don't have enough food on your plate.
This code indicates that the engine control module (ECM) has detected that the air-fuel mixture on bank 2 of the engine is too lean, meaning there is too much air and not enough fuel.
P1153 is triggered when the ECM detects that the oxygen sensor's voltage is not switching rapidly enough between rich and lean conditions on bank 2. This suggests that the fuel mixture is consistently lean, which can affect engine performance and emissions.
• Check Engine Light is on
• Poor engine performance
• Increased fuel consumption
• Faulty oxygen sensor on bank 2
• Vacuum leaks on bank 2
• Fuel injector issues on bank 2
ECM: Engine Control Module
Lean: A condition where there is too much air and not enough fuel in the air-fuel mixture
Bank 2: The side of the engine opposite bank 1, usually on V-type engines
• Scan the vehicle for additional codes.
• Inspect the oxygen sensor and wiring on bank 2.
• Check for vacuum leaks and repair as necessary.
• Replace the faulty oxygen sensor.
• Repair any vacuum leaks.
• Inspect and clean fuel injectors on bank 2.
• OBD-II scanner
• Multimeter
• Vacuum gauge
$150 - $400
Moderate
• Chevrolet Silverado
• GMC Sierra
• Ford F-150
• Regularly check and replace air filters.
• Perform routine maintenance on fuel system.
• Inspect vacuum lines periodically.
Engine Performance
• Do not ignore the Check Engine Light.
• Address fuel economy issues promptly.
• Seek professional diagnosis if unsure.
Check with your vehicle manufacturer for specific warranty coverage related to emissions components.
This code has been commonly associated with vehicles that have aged oxygen sensors or vacuum leaks.
Moderate – It should be addressed soon to prevent further engine performance issues.
Driving with a lean condition can lead to increased emissions and potential engine damage.
• Engine at operating temperature
• Vehicle in closed loop mode
Oxygen sensor on bank 2 is typically located on the exhaust manifold of the engine's second cylinder bank.
Q: Can I drive with a P1153 code?
A: It's not recommended to drive for long periods with this code, as it can lead to engine damage.
Q: How can I clear the P1153 code?
A: The code can be cleared with an OBD-II scanner after repairs are made, but it will return if the issue is not resolved.
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Fitment Required · Vehicle-fitment part
Relevant when the code or supporting diagnostics point toward upstream or downstream oxygen-sensor faults.
This code family often involves upstream or downstream oxygen-sensor diagnosis.
Verify exact sensor position and vehicle fitment before buying.
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.