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Motor (P)
The bank 2 NOx sensor returns values outside the expected range for the operating point — for example a non-ze…
A general electrical fault on the heater of the bank 2 NOx sensor. NOx sensors must reach roughly 800 C to mea…
The heater feedback (sense) line on the bank 2 NOx sensor reports values outside the expected window — heating…
The supply voltage rail to the NOx sensor on bank 1 sensor 1 is faulty — typically a fuse, harness break, or s…
The supply voltage rail to the NOx sensor on bank 1 sensor 2 is faulty — typically a fuse, harness break, or s…
The supply voltage rail to the NOx sensor on bank 2 sensor 1 is faulty — typically a fuse, harness break, or s…
The supply voltage rail to the NOx sensor on bank 2 sensor 2 is faulty — typically a fuse, harness break, or s…
The heater control loop for the NOx sensor at bank 1 sensor 1 reports off-spec behaviour — heater current draw…
The heater control loop for the NOx sensor at bank 1 sensor 2 reports off-spec behaviour — heater current draw…
The bank 2 NOx sensor reports correctly some of the time but intermittently drops out. Often a marginal connec…
The heater sense line on the bank 2 NOx sensor produces intermittent readings. Often a thermal fault inside th…
The feedback line that monitors the NOx sensor heater current draw on bank 1 sensor 1 jumps or drops out inter…
A general electrical fault on the NOx sensor on bank 2 — open, shorted, or out of plausibility. Used by SCR co…
NOx sensor on bank 2 reads in range but plausibility check fails — slow response, drift, or value does not mat…
NOx sensor on bank 2 reads below lower plausibility — short to ground. Wiring faults of this kind typically co…
NOx sensor on bank 2 reads above upper plausibility — open signal or short to B+. Wiring faults of this kind t…
NOx sensor on bank 2 signal jumps or drops out intermittently. Wiring faults of this kind typically come from …
The drive circuit for the NOx sensor heater on bank 2 is open. The sensor cannot reach operating temperature.…
NOx heater drive line on bank 2 stuck low — short to ground. The sensor heater warms the element to operating …
NOx sensors 1 and 2 on bank 1 disagree by more than the allowed tolerance over a drive cycle. One sensor drift…
NOx sensors 1 and 2 on bank 2 disagree by more than the allowed tolerance over a drive cycle. One sensor drift…
DEF heater B current draw is below threshold — partially-open winding.…
DEF heater B current draw exceeds threshold — element partially shorted.…