Low severity
P0051Low voltage in the heater circuit of the lambda sensor (Bank 2, Sensor 1)
Part
Lambda sensor
Part price
$80
At a workshop
$105
You save
$25
How to read code P0051
P
System
Powertrain (engine and transmission)
0
Code type
Generic code (SAE / OBD-II)
0
Subsystem
General system / auxiliary measurement
51
Fault number
Specific fault within the subsystem
Symptoms
- Check engine light
- Slower heating of the sensor after start-up
- Longer idle time
Possible causes
- Short to ground in the heater circuit
- Faulty heater element in the sensor
- Weak engine power
Diagnostic steps
- 1Use a multimeter to check the sensor wiring insulation
- 2Inspect the engine and body ground connections
- 3Verify the heater signal on the computer
Ad space
Frequently asked questions about P0051
What does code P0051 mean?
P0051: Low voltage in the heater circuit of the lambda sensor (Bank 2, Sensor 1).
What are the symptoms of code P0051?
Check engine light; Slower heating of the sensor after start-up; Longer idle time.
What causes code P0051?
Short to ground in the heater circuit; Faulty heater element in the sensor; Weak engine power.
Can I drive with code P0051?
SAFE TO DRIVE – The fault does not immobilise the car, but diagnose it as soon as possible.
How much does it cost to fix code P0051?
The part (Lambda sensor) costs about $80, and a mechanic’s labour about $25.
Ad space