Nissan Pathfinder R50 DTC Error Codes List

The Nissan Pathfinder R50 Error Code Diagnostic Guide will help you recognize and troubleshoot vehicle faults using the OBD-II self-diagnostic system. Detailed instructions on reading and interpreting error codes related to the engine, transmission, ignition and fuel systems, ABS and other components are included. Typical errors and their causes are described, as well as troubleshooting methods are offered, including checking and replacing sensors, modules and electrical connections. Follow these recommendations to promptly identify problems and keep your Pathfinder in working condition.

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The Nissan Pathfinder R50 (1996-2004) frequently encounters the following OBD-II related errors and trouble codes. Here are some of the most common problems:

• 1. Engine-Related Trouble Codes

P0171 (Bank 1 Too Lean) and P0174 (Bank 2 Too Lean): Caused by vacuum leaks, faulty oxygen sensors, dirty air filters, or fuel pump problems.

P0325 (Knock Sensor Malfunction): Can be caused by a worn or faulty knock sensor, damaged wiring, or poor connections. This is a common problem on the VG33E engine, as the sensor is located in a hard to reach location.

P0420 (Catalyst Inefficiency Bank 1) and P0430 (Catalyst Inefficiency Bank 2): Associated with a faulty catalyst or oxygen sensors. These codes are often caused by catalyst damage due to poor fuel or wear.

• 2. Fuel System-Related Codes

P0455 (EVAP Emission Control System Large Leak): Indicates a leak in the evaporative emission control system (for example, due to a loose gas cap or damaged hoses).

P0463 (Fuel Level Sensor High Input): May be caused by a faulty fuel level sensor or a poor connection in the circuit.

• 3. Transmission-Related Codes

P0705 (Transmission Range Sensor Malfunction): Indicates a faulty range sensor, damaged wiring, or corrosion on the contacts. May cause problems with shifting or an incorrect transmission position display.

• 4. Ignition-Related Codes

P0300 (Random Misfire): Indicates that the engine is misfiring. May be caused by faulty spark plugs, spark plug wires, ignition coils, dirty injectors, or lack of fuel.

• 5. ABS and Stability Control Related Error Codes

C1109 (ABS System Low Voltage): Often caused by problems with the battery or alternator.

C1110 (ABS Module Malfunction): May indicate problems with the ABS module itself, such as a short circuit or faulty wheel sensors.

• 6. Climate Control and Air Conditioning Related Error Codes

B1054 (Damper Motor Malfunction): Problems with the control of the air flaps of the climate control system.

Other common mistakes

P0505 (Idle Air Control System Malfunction): Associated with problems in the idle air control valve, dirt on the throttle plate, or vacuum leaks.

U1000 (CAN Communication Bus Malfunction): Indicates problems in the communication system between vehicle modules (for example, poor connections or damaged wiring).

Component wear: Some parts wear out over time (spark plugs, sensors, belts).

Electrical problems: Loose contacts, oxidation or corrosion of connectors, poor wiring.

Engine management system malfunctions: Malfunction of sensors (oxygen, detonation) or fuel supply system.

Troubleshooting tips:

• Perform regular maintenance.
• Check and replace consumables (spark plugs, filters, fluids) according to the regulations.
• Regularly perform diagnostics with an OBD-II scanner to identify and eliminate problems at an early stage.