Chrysler Crossfire. Manual - part 516
(P0155) O2 SENSOR 2/1 HEATER CIRCUIT OPEN (CONTINUED)
When Monitored and Set Condition
•
When Monitored: Engine Running and Heater duty cycle greater than 0%.
•
Set Condition: O2 Heater Temperature does not reach 575°C (959°F) within 90 seconds during monitoring
conditions. Two Trip Fault.
POSSIBLE CAUSES
O2 HEATER ELEMENT
FUSED ENGINE CONTROL RELAY OUTPUT CIRCUIT OPEN
O2 HEATER CONTROL CIRCUIT OPEN
POWERTRAIN CONTROL MODULE
For a complete Powertrain Control Module Circuit Diagram, (Refer to 9 - ENGINE - SCHEMATICS AND DIA-
GRAMS).
Diagnostic Test
1.
CHECK FOR CURRENT DTC
Turn the ignition on.
With the DRB III
T
, read PCM DTCs.
Is this DTC present?
Yes
>> For complete diagnosis of this DTC, refer to (P0135) O2
SENSOR 1/1 HEATER CIRCUIT HIGH
No
>> Go To 2
2.
INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.
Note: Check connectors — Clean/repair as necessary. Poor pin to terminal connections can set DTCs. Using
the wiring diagram/schematic as a guide, inspect the wiring and connectors specific to this DTC. Wiggle the
wires while checking for shorts and open circuits.
Note: Check for any Technical Service Bulletins that may apply.
Were there any problems found?
Yes
>> Repair as necessary.
Perform POWERTRAIN VERIFICATION TEST - VER 2.
No
>> The condition that caused this DTC to set is currently not present. Inspect the related wiring harness for
a possible intermittent condition.
ZH
ENGINE - ELECTRICAL DIAGNOSTICS
9 - 209