(DME) Condition For Fault Memory Entry - 1

2CA6 - P0135

Information saved in
DME

Fault code
2CA6 - P0135

Fault text
Oxygen sensor heating before catalytic converter, function

Fault description
O2 Sensor Heater Circuit (Bank 1 Sensor 1)

Condition for fault identification
Test condition:
Check O2 sensor heater; sensor too cold
Terminal condition: Terminal 15, engine on
Voltage condition:
none

Condition for fault memory entry
O2 sensor temperature < 680 °C for more than 5 sec.

Action in service
1. Visual inspection of wires, DME plug and O2 sensor for
damage
2. Check wires (including resistance)
3. Check plug-in connections DME <=> Wiring harness
<=> Upstream (pre-cat) O2 sensor on Bank 1 (water or
corrosion in the plug? => Repeatedly disconnect the plug
and then FIRMLY press it back in)
4. Replace O2 sensor
5. Replace DME

Fault effect and breakdown warning


Driver information
Warning light:
MIL ON

Service instruction
none