Nilfisk C 135.7 — Error codes & fixes
Troubleshooting guide for the Nilfisk C 135.7. Diagnose an error code and find the fix.
Water leaking from pump
leakWater leaks from the pump housing, usually from a worn seal or a loose fitting.
Source: ProductDB new-categories research catalog
Confidence: 90%
Verified Aug 8, 2026
No / low pressure
no-pressureThe washer runs but produces little or no pressure, often from a blocked nozzle, air in the pump or a worn pump seal.
Source: Bosch support — power tool troubleshooting
Confidence: 85%
Verified Aug 9, 2026
Detergent not dispensing
detergentThe pressure washer does not dispense detergent, often due to a blocked siphon.
Source: Bosch support — power tool troubleshooting
Confidence: 80%
Verified Aug 9, 2026
Low pressure
low-pressureThe pressure washer produces low pressure, often due to a worn pump or leak.
Source: Bosch support — power tool troubleshooting
Confidence: 80%
Verified Aug 9, 2026
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