OBD II mystery number

[dj_skidoo]

i have a 96 mc z34 and when my local mechanic scanned it these numbers came up and one of them is not in my Haynes repair manual

PO122---Throttle postition sensor circuit, low input
PO131---Oxygen sensor circuit, low voltage (upstream sensor)
PO133---Oxygen sensor circuit, slow resoponse (upstream sensor)
PO300---Random/multiple cylinder misfire detected
PO410---Secondary air injection system
PO420---Catalyst system efficiency below threshold
P1106---Manifold absolute pressure sensor circuit intermittent high voltage
P1641---Malfunction indicator light control circuit
P1870---?????????

[dwalmop]

Ahhh, yes. The infamous Transmission slipping for no apparent reason code. There is a kit available to fix this, however, I think it takes a lot of work to install. There is a valve somewhere in the transmission that loses it's hydraulic integrity, and the kit renews that.

[dwalmop]

Your local (reputable) transmission shop should be able to tell you exactly what the problem is and what it will cost, probably over the phone even.

[HellzX]

Looks to me like you need to change a couple parts there: Throttle position sensor and your O2 sensor. Once those are changed, most of the other codes should disappear.

As for that transmission slipping code, I wouldnt worry about it. Fixing it would cost you a fair chunk of change. If the bill came to $500 I wouldnt be suprised.