Mercedes-Benz
Rough road detected from wheel speeds. Misfire monitoring is paused; check ABS codes if it repeats.
P1605 fault code: what it means
P1605: Rough road detected from wheel speeds. Misfire monitoring is paused; check ABS codes if it repeats.
Usual causes, most likely first
- rough road driving
- wheel speed sensor fault
P1605 by make
Toyota
Rough idling logged by the ECM on newer Toyotas (often with misfire or idle codes). On some 1990s Toyotas P1605 instead means a knock control CPU fault.
What the repair usually costs
- ABS wheel speed sensor replace, one wheelNZ$130–NZ$610 · A$130–A$590
- Throttle body clean and idle relearnNZ$90–NZ$190 · A$100–A$200
- Electronic throttle body replaceNZ$470–NZ$1,290 · A$440–A$1,190
- Parking sensor replace, one sensorNZ$130–NZ$520 · A$130–A$510
Not sure what P1605 means on your car? Ask Credov.
Before you clear it
Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.
Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.