CODE PO650 MALFUNCTION INDICATOR LAMP CIRCUIT MALFUNCTION CONDITIONS. POSSIBLE CAUSES MIL CONTROL CIRCUIT IS OPEN , SHORTED TO GROUND TO SYSTEM POWER,MIL CONTROL POWER CIRCUIT OPEN IN THE INSTRUMENT CLUSTER, MIL THE LAMP IS DAMAGED OR HAS FAILED,INSTRUMENT CLUSTER OR THE PCM HAS FAILED. CODE PO332 KNOCK SENSOR CIRCUIT LOW INPUT BANK 2 CONDITIONS, POSSIBLE CAUSE KNOCK SENSOR FAILED, CODE P1875 4WD LOW SWITCH CIRCUIT MALFUNCTION CONDITIONS FOR TRANSMISSIONS 4L60E 4L80E, POSSIBLE CAUSES 4WD SWITCH LOW SIGNAL CIRCUIT IS OPEN OR SHORTED TO GROUND, 4WD LOW SWITCH IS DAMAGED OR IT HAS FAILED,PCM HAS FAILED.
P0650: Malfunction Indicator Light (MIL) Control Circuit
P0332: Knock sensor 2 low input
P1875 is given the description "4WD Low Switch Circuit Electrical." A fault has been sensed in the electrical switch circuit for the low setting of the four-wheel drive when this code appears
Read more: Chevy Code P1875 ' eHow.com http://www.ehow.com/facts_7937128_chevy-code-p1875.html#ixzz1GXuObZc2
DTC P0650
Circuit Description
The malfunction indicator lamp (MIL) is located on the instrument panel cluster (IPC). The MIL informs the driver that an emission system fault has occurred and that the engine control system requires service. The control module monitors the MIL control circuit for conditions that are incorrect for the commanded state of the MIL. For example, a failure condition exists if the control module detects low voltage when the MIL is commanded OFF, or high voltage when the MIL is commanded ON. If the control module detects an improper voltage on the MIL control circuit, DTC P0650 will set.
code po332 knock sensor #2 low input
these engines have a problem that should be covered under warranty with the knock sensors which are located in the valley top plate below your intake manifold,... they catch water in there and corrode both sensor, wire plug. and thus the ECU gets poor continuity and sets DTC in MIL. conditions may cause poor gas mileage and long crank period before starting because it pulls back ignition timing for safety.
DTC P1875 sets if one of the following conditions occurs:
Does it go into 4 low? When was the last time it was in 4 low?
Condition 1
The 4WD low switch is in 4WD low.
The transfer case is not in 4WD low.
The TCC slip speed is -3,000 to -50 RPM.
The transfer case ratio is 0.08-1.2, the transfer case ratio is the engine speed divided by the transfer case output speed.
All conditions are met for 5 seconds.
Condition 2
The 4WD low switch is not in 4WD low.
The transfer case is in 4WD low.
The TCC is commanded ON.
The TCC slip speed is 100 to 3,000 RPM.
The transfer case ratio is 2.5-2.9.
All conditions are met for 10 seconds.
check these things out and hope i helped.
In Chevrolet vehicles, code P1875 is given the description "4WD Low Switch Circuit Electrical." A fault has been sensed in the electrical switch circuit for the low setting of the four-wheel drive when this code appears. The problem sensed is within an electrical circuit that connects the Vehicle Control Module to the Transfer Case Control Module. good-day !
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