what do this codes mean?
10 pcm 2-codes
10-pcm p0300h
10-pcm p1133hc
28-tcs c1276h
thanks in advance

P1133 Heated Oxygen Sensor (HO2S) Insufficient Switching Bank 1 Sensor 1
C1276 Delivered Torque Signal CKT Malfunction
P0300 Engine Misfire Detected
H=History and C-Current code.
Last edited by Mr.Bill; Nov 28, 2008 at 11:29 PM.
P1133 Heated Oxygen Sensor (HO2S) Insufficient Switching Bank 1 Sensor 1
C1276 Delivered Torque Signal CKT Malfunction
P0300 Engine Misfire Detected
H=History and C-Current code.


The 1133 indicates the Front Driver's Oxygen Sensor either was out of range or is getting flaky on you. Check it's wiring and connections for looseness, damage, corrosion ect. If all seems well replace it, it's easy enough to replace so I would replace both sides...
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The PCM monitors the HO2S sensors and sets the code when the switching cycle does not run correctly.
The diagnostic procedure is quite long but the first and simplest check is for an exhaust leak. I'd start there.
Next check is that the HO2S sensor is securely installed, check for corrosion on the sensor terminals, "terminal tension" at the sensors (whatever that is) and for damaged wiring on the circuit.
Is your engine/exhaust system stock? If not how recently did you have headers or exhaust work done?
Last edited by DeeGee; Nov 29, 2008 at 01:10 AM.

The PCM monitors the HO2S sensors and sets the code when the switching cycle does not run correctly.
The diagnostic procedure is quite long but the first and simplest check is for an exhaust leak. I'd start there.
Next check is that the HO2S sensor is securely installed, check for corrosion on the sensor terminals, "terminal tension" at the sensors (whatever that is) and for damaged wiring on the circuit.
Is your engine/exhaust system stock? If not how recently did you have headers or exhaust work done?






