Infiniti All models error codes
Codes
- 11Error codeCrank Angle Sensor
- 12Error codeMass Air Flow Sensor
- 14Error codeVehicle Speed Sensor
- 22Error codeFuel Pump Control
- 25Error codeIdle Air Control Valve
- 33Error codeHeated Oxygen Sensor
- 34Error codeKnock Sensor
- 35Error codeEGR Temperature Sensor (RH)
- 41Error codeIntake Air Temperature Sensor
- 42Error codeFuel Pump Sensor
- 43Error codeThrottle Position Sensor
- 45Error codeInjector Leak
- 46Error codeSecondary Throttle Sensor
- 53Error codeEGR Temperature Sensor (LH)
- 77Error codeRear Heated Oxygen Sensor
- 82Error codeCrankshaft Position Sensor
- 84Error codeA/T Diagnosis Communication Line
- 91Error codeFront Heated Oxygen Sensor Heater
- C1101Error codeABS wheel speed sensor fault, front right. Failed sensor, damaged tone ring, or wiring harness damage. On the QX60 and QX80, front wheel speed sensor failures are more common than rear due to brake heat proximity
- C1102Error codeABS wheel speed sensor fault, front left. Same as C1101 on the opposite side
- C1103Error codeABS wheel speed sensor fault, rear right. Rear sensor failures on the QX80 are often caused by corrosion at the sensor body mounting point
- C1104Error codeABS wheel speed sensor fault, rear left. Same failure pattern as C1103. On the G35 and G37 sedan, rear wheel speed sensor failures are more common than on the SUV lineup due to different hub designs
- C1111Error codeABS actuator motor circuit fault. The hydraulic ABS pump motor is not responding. Causes include a failed motor, relay fault, or ABS module fault. Requires ABS-capable scanner to diagnose sub-faults
- C1130Error codeABS control unit fault. The ABS module itself has detected an internal fault. On the G35 and G37, this code sometimes appears after a battery replacement due to voltage interruption during module initialisation.
- C1155Error codeBrake fluid pressure sensor fault. The ABS module is not receiving a valid signal from the brake pressure sensor. Causes include a failed sensor, low brake fluid, or ABS module fault. Replace sensor; check brake fluid level before diagnosis
- C1156Error codeBrake fluid level low. The ABS module has detected low brake fluid. Check fluid level and inspect for leaks at all four callipers and brake lines before topping up
- P0000Error codeNo Self Diagnostic Failure Indicated
- P0014Error codeCamshaft position timing over-advanced, Bank 1 Exhaust. Same cause as P0011 but on the exhaust cam. On the VQ series, P0011 and P0014 appearing together confirms VTC system fault rather than a sensor issue
- P0021Error codeCamshaft position timing over-advanced, Bank 2. Mirror of P0011 on the opposite bank. When P0011 and P0021 appear together on a V6, the VTC oil control valve on both banks is the likely cause - often an oil maintenance issue
- P0031Error codeUpstream O2 sensor heater circuit low, Bank 1. The heater element in the upstream sensor has failed or has a short to ground. Replace the upstream oxygen sensor. Common on VQ35DE past 100,000 miles
- P0037Error codeDownstream O2 sensor heater circuit low, Bank 1. Same as P0031 but on the post-catalyst sensor. Replace downstream O2 sensor; does not indicate converter failure on its own
- P0087Error codeFuel rail pressure too low. Failing fuel pump, clogged filter, or leaking fuel pressure regulator. On the QX80 and QX56 with the VK56VD V8, fuel pump failures are documented from around 120,000 miles. Check fuel pressure with a gauge before replacing the pump module
- P0100Error codeMass Air Flow sensor circuit fault. Dirty or failed MAF sensor, torn intake boot, or wiring issue. Clean the MAF sensor with dedicated spray first; replace if the code returns
- P0101Error codeMAF sensor range/performance. The sensor is reading but not within expected parameters for current engine load. Common on the VQ35DE after 80,000 miles. Clean the sensor element before replacing
- P0102Error codeMAF sensor circuit low input. The MAF signal is below the minimum expected voltage - often a disconnected sensor, torn intake boot, or wiring issue rather than a failed sensor.
- P0105Error codeAbsolute Pressure Sensor
- P0117Error codeEngine coolant temperature sensor voltage low. Failed ECT sensor or corroded connector. On higher-mileage VQ engines, the sensor connector at the thermostat housing is a known corrosion point.
- P0128Error codeCoolant temperature below thermostat regulating temperature. Thermostat stuck open - one of the most common codes across the entire Infiniti/Nissan lineup. Also causes poor heater performance and downstream rich codes. Thermostat replacement resolves it in nearly all cases
- P0131Error codeUpstream O2 sensor low voltage, Bank 1. Lean exhaust condition detected at the upstream sensor. Causes include an exhaust leak near the sensor, vacuum leak, or failed sensor. On the FX35 and G35, exhaust manifold gasket leaks are a common cause at higher mileage
- P0132Error codeFront O2 Sensor, Bank 1 Rich Shift Monitoring
- P0133Error codeUpstream O2 sensor slow response, Bank 1. The sensor is responding too slowly to mixture changes - typically a worn sensor past 100,000 miles. Replace the upstream O2 sensor
- P0134Error codeFront O2 Sensor, Bank 1 High Voltage
- P0137Error codeRear O2S, Bank 1 Minimum Voltage Monitoring
- P0138Error codeDownstream O2 sensor high voltage, Bank 1. The post-catalyst sensor is reading consistently rich. Causes include a failed converter allowing unburned fuel through, or a failed downstream sensor. Confirm converter efficiency before replacing sensor
- P0140Error codeRear O2S, Bank 1 High Voltage
- P0151Error codeFront O2 Sensor, Bank 2 Lean Shift Monitoring
- P0152Error codeFront O2 Sensor, Bank 2 Rich Shift Monitoring
- P0153Error codeFront O2 Sensor, Bank 2 Response Monitoring
- P0154Error codeFront O2 Sensor, Bank 2 High Voltage
- P0156Error codeRear H02S Sensor, LH Bank