BMW E series
Error messages relating NOx sensor:
2AEC Nitrogen Oxide Sensor Self Diagnostics
2AF0; 2B05 nitric oxide sensor, heating
2AF2; 2B06; 2B09 nitric oxide sensor, Lambda linear
2AF4; 2B07; 2B0A NOx sensor, electrical
2AF6; 2AFB; 2B0B nitric oxide sensor, Lambda binary
2AF8; 2AF9 nox sensor, nox signal: coast mode check
2EAE NOx sensor message missing (timeout)
30D6 nitric oxide sensor, plausibility
30D8 NOx sensor, Sensor damaged
30DA NOx sensor, heating time
30DC nitric oxide sensor, heating
30DE NOx sensor – Lambdaprobe before catalyst, Korrelation
30E0 NOx sensor, Offset
30E2 nitric oxide sensor, thrust test
30E4 nitric oxide sensor, aging
30E6 nitric oxide sensor, dynamics
Error messages relating NOx catalytic converter:
30E9 nitric oxide catalytic converter, aging
30EA nitric oxide catalytic converter, sulphurized*
*if error appears repeatedly and/or forced desulfurization is not possible/successful
Hidden problems with NOx sensor. Following diagnostics live data:
NOx concentration is 0 ppm**
(INPA data | NOx Sensor / Exhaust temperature menu) after:
- engine is warmed up
- exhaust temperature is more than 220 oC
- driving speed exceeds 20 km/h for more than 2 min
**continuously or periodically: sensor is damaged
Problems with NOx system (NOx sensor and/or NOx catalytic converter) can be the reason of following error messages:
29CC misfirings, several cylinders
29CD misfirings, cylinder 1
29CE misfirings, cylinder 2
29CF misfirings, cylinder 3
29D0 misfirings, cylinder 4
29D1 misfirings, cylinder 5
29D2 misfirings, cylinder 6
29E0 fuel mixture control
29E1 fuel mixture control 2
29F4 catalytic converter conversion
29F5 catalytic converter conversion 2
2A2B fuel mixture control
2A2C fuel mixture control 2
2C31 Lambda probe in front of catalytic converter, trimming control
2C32 Lambda probe in front of catalytic converter 2, trimming control
2C7E Lambda probe behind catalytic converter, trimming control
2C7F Lambda probe behind catalytic converter 2, trimming control
etc.
BMW F series
Error messages relating NOx sensor:
12C104 NOx sensor, binary oxygen sensor: Line disconnection
12C108 NOx sensor, binary oxygen sensor: Short circuit
12C204 NOx sensor, linear oxygen sensor: Line disconnection
12C208 NOx sensor, linear oxygen sensor: Short circuit
12C304 NOx sensor, heating: Activation, line disconnection
12C308 NOx sensor, heating, activation: short circuit
12C401 NOx sensor, Plausibility, signal activity too low
12C501 NOx sensor, sensor poisoning: binary lambda signal too lean
12C502 NOx sensor, sensor poisoning: binary lambda signal too rich
12C504 NOx sensor, sensor poisoning: NOx signal too low
12C601 NOx sensor, operating readiness: Signal not available at start
12C602 NOx sensor, operational readiness: signal not available during operation
12C701 NOx sensor, heating: Heat output too low during starting
12C702 NOx sensor, heating: Heat output too low during operation
12C704 NOx sensor, heating: Supply voltage
12C801 NOx sensor, oxygen sensor before catalytic converter, plausibility: correlation fault
12C901 NOx sensor, adjustment: fault at start of charging phase
12CA01 NOx sensor, trailing-throttle check: binary lambda signal too rich
12CA02 NOx sensor, trailing-throttle check: linear lambda signal too rich
12CA04 NOx sensor, overrun test: NOx signal too low
12CA08 NOx sensor, overrun test: NOx signal too high
12CB01 NOx sensor, regeneration, nitrogen-oxide cat.: regeneration monitoring
12CB02 NOx sensor, regeneration, nitrogen-oxide cat.: time-controlled regeneration abort
12CC01 NOx sensor, oxygen sensor signal after regeneration, dynamics: Binary dynamic response too low
12CD01 NOx sensor, self-diagnosis: limit value 1 exceeded
12CD02 NOx sensor, self-diagnosis: limit value 2 exceeded
12CE01 NOx sensor, version: incorrect
CD8510 Lost Communication With NOx Sensor ‘A’
Error messages relating NOx catalytic converter:
180401 NOx catalytic converter: Efficiency below limit
Hidden problems with NOx sensor. Following diagnostics live data:
NOx concentration is 0 ppm**
(ISTA D/+ data) after:
- engine is warmed up
- exhaust temperature is more than 220 oC
- driving speed exceeds 20 km/h for more than 2 min
**continuously or periodically: sensor is damaged
Related entries:
Performance check of NOx sensor
Stratified charge. NOx system performance evaluation
