Bank 2 knock sensor voltage low.
P0332 — also written PO332, P 0332, 0332 — is the OBD-II code for knock sensor 2 low input. Same code, same fix: this page covers every spelling of it.
This code means the ECU isn't hearing anything from the second knock sensor, usually on a V6 or V8 engine. It’s a common headache on high-mileage Range Rovers and older BMWs where the wiring gets brittle.
P0332 is a sensors fault code, typically costing £90–£400 to put right in a UK garage.
What P0332 actually feels like to drive
- Engine feels 'flat' or sluggish, especially when pulling away from roundabouts.
- The car 'pings' or rattles under heavy load (pre-ignition) because the ECU has pulled the timing back.
- Fuel economy takes a massive hit, often dropping 4-5 MPG.
- MIL (Check Engine Light) is glowing steady on the dash.
- Engine might sound a bit 'tappety' or louder than usual during acceleration.
What causes P0332?
- Failed sensor
- Short to ground
UK vehicles that throw P0332 most often
- Range Rover Sport 4.2 / 4.4 V8 (2005-2009)
- Jaguar XF 3.0 V6 Petrol (2008-2012)
- BMW 3 Series (E90) 325i/330i N52 engine (2005-2011)
- Vauxhall Insignia 2.8 V6 Turbo (A28NER)
- Audi A6 3.2 FSI V6 (2004-2011)
- Subaru Impreza 2.5 WRX (EJ25) - specifically Bank 2 issues
How P0332 is fixed
- Replace sensor
- Repair wiring
The P0332 misdiagnosis that wastes money
I see lads constantly throwing a new sensor at this code because they're cheap on eBay, only to find the light's back on within two miles. On the V6 Jaguars and Land Rovers, P0332 is rarely a dead sensor; it’s usually the sub-harness that’s been chewed by a rodent or cooked by engine heat until the insulation is brittle. I’ve also seen folks try to 'clean' the sensor face, which is a total waste of time. If the voltage is low, it’s either a hard short in the loom or the internal piezo crystal has literally cracked from age.
What a UK garage should charge for P0332
For a basic diagnostic plug-in, expect to pay £50-£80 at a local indie. The sensor itself from a factor like Euro Car Parts will be between £40 and £90 for a decent Bosch unit. However, the sting is the labour. On a simple transverse engine, it’s a 1-hour job (£60-£90), but on a V-engine where the manifold has to come off, you’re looking at 3-4 hours, pushing the total bill toward £350 or £400. Main dealers will easily double that labour rate.
P0332 repair cost in the UK
Most P0332 repairs land between £90–£400 including parts and labour. The spread is wide because the cheap fix (a sensor, a hose, a leak) and the expensive fix (a major component) throw the same code — which is why a proper diagnosis before parts are bought saves the most money.
Bob's tip on P0332
If you're taking this to a garage, ask them to 'scope the sensor output while tapping the block'. If they just scan it and say 'it needs a sensor', they might be guessing. On some engines, like the 4.2 Jag V8, getting to this sensor involves pulling the intake manifold. That’s a lot of labour, so don’t buy a no-name £15 sensor off Amazon. Insist on a Bosch or NGK/NTK unit. If you put a cheap one in and it fails in a month, you're paying that hefty labour bill all over again. Also, make sure they torque it exactly to spec—over-tightening a knock sensor kills it instantly.
Can you drive with P0332?
Yes.
Urgency: medium.