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Trouble Codes

Here’s a list of all diagnostic trouble codes (DTC) and OBD-II codes (OBD2). For each one, we describe the meaning, symptoms, causes and how you can fix the issue.

P0523 Trouble Code: Meaning, Symptoms, Causes & Fixes

By Jeffrey MonahanMay 28, 2024
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The P0523 trouble code technically means “Engine Oil Pressure Sensor/Switch “A” Circuit High”. Here’s exactly what you need to do to fix it.

P0122 Trouble Code: Meaning, Symptoms, Causes & Fixes

By Jeffrey MonahanMay 28, 2024
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The P0122 trouble code technically means “Throttle/Pedal Position Sensor/Switch “A” Circuit Low Input”. Here’s exactly what you need to do to fix it.

P0356 Trouble Code: Meaning, Symptoms, Causes & Fixes

By Jeffrey MonahanMay 28, 2024
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The P0356 trouble code technically means “Ignition Coil “F” Primary/Secondary Circuit Malfunction”. Here’s exactly what you need to do to fix it.

P0343 Trouble Code: Meaning, Symptoms, Causes & Fixes

By Jeffrey MonahanMay 28, 2024
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The P0343 trouble code technically means “Camshaft Position Sensor ‘A’ Circuit High Input”. Here’s exactly what you need to do to fix it.

P0685 Trouble Code: Meaning, Symptoms, Causes & Fixes

By Jeffrey MonahanMay 28, 2024
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The P0685 trouble code technically means “ECM/PCM Power Relay Control Circuit Open”. Here’s exactly what you need to do to fix it.

P2118 Trouble Code: Meaning, Symptoms, Causes & Fixes

By Jeffrey MonahanMay 28, 2024
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The P2118 trouble code technically means “Throttle Actuator Control Motor Current Range/Performance”. Here’s exactly what you need to do to fix it.

P0161 Trouble Code: Meaning, Symptoms, Causes & Fixes

By Jeffrey MonahanMay 28, 2024
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The P0161 trouble code technically means “Oxygen Sensor Heater Circuit Malfunction (Bank 2, Sensor 2)”. Here’s exactly what you need to do to fix it.

P0138 Trouble Code: Meaning, Symptoms, Causes & Fixes

By Jeffrey MonahanMay 28, 2024
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The P0138 trouble code technically means “Oxygen Sensor Circuit High Voltage (Bank 1, Sensor 2)”. Here’s exactly what you need to do to fix it.

P0110 Trouble Code: Meaning, Symptoms, Causes & Fixes

By Jeffrey MonahanMay 28, 2024
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The P0110 trouble code technically means “Intake Air Temperature Sensor 1 Circuit Malfunction”. Here’s exactly what you need to do to fix it.

P0841 Trouble Code: Meaning, Symptoms, Causes & Fixes

By Jeffrey MonahanMay 28, 2024
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The P0841 trouble code technically means “Transmission Fluid Pressure Sensor/Switch “A” Circuit Range/Performance”. Here’s exactly what you need to do to fix it.

P0130 Trouble Code: Meaning, Symptoms, Causes & Fixes

By Jeffrey MonahanMay 28, 2024
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The P0130 trouble code technically means “O2 Sensor Circuit (Bank 1 Sensor 1) Malfunction”. Here’s exactly what you need to do to fix it.

P0501 Trouble Code: Meaning, Symptoms, Causes & Fixes

By Jeffrey MonahanMay 28, 2024
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The P0501 trouble code technically means “Vehicle Speed Sensor (VSS) Range/Performance.”. Here’s exactly what you need to do to fix it.

U0151 Trouble Code: Meaning, Symptoms, Causes & Fixes

By Jeffrey MonahanMay 28, 2024
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The U0151 trouble code technically means “Lost Communication with Restraints Control Module”. Here’s exactly what you need to do to fix it.

P0157 Trouble Code: Meaning, Symptoms, Causes & Fixes

By Jeffrey MonahanMay 28, 2024
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The P0157 trouble code technically means “Oxygen Sensor Circuit Low Voltage (Bank 2, Sensor 2)”. Here’s exactly what you need to do to fix it.

P0234 Trouble Code: Meaning, Symptoms, Causes & Fixes

By Jeffrey MonahanMay 28, 2024
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The P0234 trouble code technically means “Turbocharger/Supercharger Overboost Condition”. Here’s exactly what you need to do to fix it.

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