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OBDII/EOBD diagnostics trouble codes definition

If your car is equipped with OBD-II or EOBD, you can access over 5,000 generic OBD-II diagnostic trouble codes (DTCs). These codes cover various vehicle systems, including Powertrain (P0XXX, P2XXX, P34XX), Body (B0XXX), Chassis (C0XXX), and Network/Communication (U0XXX, U2XXX, U3XXX). Additionally, there are more than 13,500 manufacturer-specific OBD-II codes available for diagnosing issues unique to different car brands and models. Make sure you're equipped with the right tools to understand and resolve these trouble codes to keep your vehicle running smoothly.

By using these OBD-II codes, you can effectively diagnose issues related to engine performance, safety features, suspension, and more.

Supported manufacturers with specific OBD2 codes:

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Definition of check engine code P1128:

Acura:

MAP Lower Than Expected

Chrysler/Dodge/Jeep:

Closed Loop Fueling Not Achieved - Bank 1

Citroen/Peugeot:

Upstream Heated O2 Sensors Swapped

Daewoo:

IDLE RATIO (P /LOAD) - LEAN

Ford:

Upstream Heated O2 Sensors Swapped

Honda:

Manifold Absolute Pressure (MAP) Sensor Circuit Lower Than Expected

Hyundai:

Long Term Fuel Trim Multiplier Too Lean

Jaguar:

Upstream oxygen sensors swapped from bank to bank

Lamborghini:

Long term fuel trim multiplicative air system high

Lexus:

Throttle Control Motor Lock Malfunction

Lincoln:

Upstream Heated Oxygen Sensor Signals Reversed

Mazda:

HO2S Bank 1 Sensor 1 Signals Swapped in Key On Engine Running Self Test

Mercedes:

Upstream H02S Sensors Swapped

Mercury:

Upstream Heated Oxygen Sensor Signals Reversed

Nissan:

Throttle Control Motor

Oldsmobile:

Upstream Heated Oxygen Sensor Signals Reversed

Porsche:

Oxygen Sensing

Saab:

Multiplicative Adaptation, Bank 1 Max. Value

Scion:

Throttle Control Motor Lock.

Toyota:

Throttle Control Motor Lock Malfunction

Volkswagen/Audi:

Long Term Fuel Trim mult.,Bank1 System too Lean

Volvo:

Long Term Fuel Trim mult.,Bank1 System too Lean
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