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12 results
Showing matches for "NOx sensor".
P2201: NOx sensor circuit range / performance
A NOx sensor signal or its controller behavior is outside the expected operating range.
P20EE: SCR NOx catalyst efficiency below threshold
The SCR system is not reducing NOx emissions as effectively as the ECU expects.
P2453: DPF differential-pressure sensor range / performance
The pressure signal used to calculate DPF restriction is implausible or outside range.
P0101: Mass-air-flow signal range / performance
Airflow reported by the MAF sensor does not agree with the ECU's calculated operating conditions.
P0420: Catalyst efficiency below threshold, bank 1
Upstream and downstream oxygen-sensor behavior suggests insufficient catalyst oxygen-storage performance.
P0016: Crankshaft / camshaft timing correlation
The ECU sees the crankshaft and camshaft signals outside their expected relationship.
P0087: Fuel rail pressure too low
Measured fuel pressure fell below the pressure requested by the engine controller.
P0171: System too lean, bank 1
Fuel trim has reached a lean threshold because the ECU is adding more fuel than expected.
P0401: Exhaust-gas recirculation flow insufficient
Measured or inferred EGR flow is lower than the controller expects.
P2002: Diesel particulate filter efficiency below threshold
The ECU calculates that particulate-filter performance is below its required threshold.
P2015: Intake-manifold runner position range / performance
The intake-runner position signal is outside the range expected by the controller.
P2463: Diesel particulate filter soot accumulation
Calculated soot loading has reached a level that requires diagnosis before normal operation can continue.