P0132-O2 SENSOR 1/1 CIRCUIT HIGH

For a complete wiring diagram Refer to Section 8W.

When Monitored:
With the Oxygen Sensor 1/1 heater temperature greater than 496° C (925° F) and battery voltage greater than 10.4 volts.
Set Condition:
The PCM detects that the Oxygen Sensor 1/1 voltage is greater than 3.99 volts for 40 seconds. One Trip Fault. Three good trips to turn off the MIL.

Possible Causes

(K41) O2 1/1 SIGNAL CIRCUIT SHORTED TO VOLTAGE

(K902) O2 1/1 RETURN CIRCUIT SHORTED TO VOLTAGE

(K41) O2 1/1 SIGNAL CIRCUIT SHORTED TO THE (K99) O2 1/1 HEATER CONTROL CIRCUIT

(K41) O2 1/1 SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE

(K902) O2 1/1 RETURN CIRCUIT OPEN OR HIGH RESISTANCE

OXYGEN SENSOR 1/1

POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).

Diagnostic Test

1.OXYGEN SENSOR 1/1 VOLTAGE

WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death.

Is the voltage greater than 3.9 volts?

Yes

Go to 2

Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

2.(K41) O2 1/1 SIGNAL CIRCUIT SHORTED TO VOLTAGE

NOTE: Measure the voltage in reference to ground, not the (K902) O2 1/1 Return circuit.

Is the voltage above 5.2 volts?

Yes

Repair the (K41) O2 1/1 Signal circuit for a short to voltage.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).

Go to 3

3.(K902) O2 1/1 RETURN CIRCUIT SHORTED TO VOLTAGE

Is there any voltage present?

Yes

Repair the (K902) O2 1/1 Return circuit for a short to voltage.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).

Go to 4

4.(K41) O2 1/1 SIGNAL CIRCUIT SHORTED TO THE (K99) O2 1/1 HEATER CONTROL CIRCUIT

Is the resistance below 100.0 ohms?

Yes

Repair the (K41) O2 1/1 Signal circuit for a short to voltage.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).

Go to 5

5.OXYGEN SENSOR 1/1

Is the voltage between 2.3 and 2.7 volts with the jumper wire in place?

Yes

Replace the Oxygen Sensor 1/1 in accordance with the Service Information.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).

Go to 6

6.(K41) O2 1/1 SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE

Is the resistance below 5.0 ohms?

Yes

Go to 7

Repair the (K41) O2 1/1 Signal circuit for an open circuit or high resistance.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).

7.(K902) O2 1/1 RETURN CIRCUIT OPEN OR HIGH RESISTANCE

Is the resistance below 5.0 ohms?

Yes

Go to 8

Repair the (K902) O2 1/1 Return circuit for an open circuit or high resistance.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).

8.POWERTRAIN CONTROL MODULE (PCM)

Were any problems found?

Yes

Repair as necessary.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).

Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).