I have just had my car recently serviced and a couple of error codes showed up.

Can anybody help out and tell me exactly what they mean?

P1131-63 Lack of Ho2s11 switch on sensor

P1132-63 Ho2s11 not switching correctly

Thanks in advance.

Didn't they know?

they look like 2 of the TC error codes (I think)

has your car ever been edited??

I will look it up tommorow to be sure but ho2 would normally refer to a heated oxygen sensor. & if it is not switching this normally refers to either a faulty oxygen sensor or the reich or lean exhaust mixture & the sensor cannot coorect enough to signal. The sensor is only basically capable of correcting a certain margin and if it cant correct it wont switch-they need to be checked with a scope cos a scann tool's live data is not fast enough to give recation times, the should switch at around 7-9 cross counts per 10 seconds.

anyways I will look at the code list tommorow & confirm

p1131-o2 sensor 1 lean condition

p1132-o2 sensor 1 rich condition

although these contradict each other this could be cause by faulty sensor, or problem with tuning, air leaks, etc

if the code only stored once & is a history code I wouldnt stress too much

a gas analiser & scope on the sensor should confirm prety easily if they are working, the code may have stored when someone was working on it if its a once of. running with a coil of can trigger rich codes, of vac leaks can trigger lean codes. has it logged.

p1131-o2 sensor 1 lean condition

p1132-o2 sensor 1 rich condition

although these contradict each other this could be cause by faulty sensor, or problem with tuning, air leaks, etc

if the code only stored once & is a history code I wouldnt stress too much

a gas analiser & scope on the sensor should confirm prety easily if they are working, the code may have stored when someone was working on it if its a once of. running with a coil of can trigger rich codes, of vac leaks can trigger lean codes. has it logged.

p1131-o2 sensor 1 lean condition

p1132-o2 sensor 1 rich condition

although these contradict each other this could be cause by faulty sensor, or problem with tuning, air leaks, etc

if the code only stored once & is a history code I wouldnt stress too much

a gas analiser & scope on the sensor should confirm prety easily if they are working, the code may have stored when someone was working on it if its a once of.  running with a coil of can trigger rich codes, of vac leaks can trigger lean codes.  has it logged.

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The codes did only store once each, I have recently changed the o2 sensor to a new one so would be surprised if the sensor is faulty.

Anyways thanks for the help.