647 – SD P-Exhaust Lambda
ZKP-Number: 1.0163.900
Exhaust gas sensor near lambda sensor signal error
Yellow alarm – warning
Cause Corrective action
Exhaust gas sensor near lambda
sensor faulty
Short circuit or wire break.
1. Check sensor and wiring (B91), replace as necessary
(→ Page 189).
2. Fault is rectified when engine is restarted (→ Page 29).
3. Contact Service.
648 – SD P-Charge Air B
ZKP-Number: 1.0149.900
Charge-air pressure sensor, B-side, signal error
Yellow alarm – warning
Cause Corrective action
Charge-air pressure sensor on B-
side faulty
Short circuit or wire break.
1. Check sensor and wiring (B10.11), replace as necessary
(→ Page 189).
2. Fault is rectified when engine is restarted (→ Page 29).
662 – SD Smart NOx Heating Element
ZKP-Number: 1.0700.141
Smart NOx sensor (heating element) signal error
Yellow alarm – warning
Cause Corrective action
Smart NOx heating element
faulty
Short circuit or wire break.
1. Check sensor and wiring, replace as necessary (→ Page 189).
2. Contact Service.
663 – SD Smart NOx Concentration
ZKP-Number: 1.0700.143
Smart NOx sensor (NOx concentration) signal error
Yellow alarm – warning
Cause Corrective action
Smart NOx sensor (NOx
concentration) faulty
Short circuit or wire break.
1. Check sensor and wiring, replace as necessary (→ Page 189).
2. Contact Service.
92 | Troubleshooting | MS150112/01E 2014-10
TIM-ID: 0000029153 - 005
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