Code
P2083
Generic
P — Powertrain
Exhaust Gas Temperature Sensor Circuit Intermittent Bank 2 Sensor 1
Views:
UK: 16
EN: 28
RU: 23
AI status
Completed
Completed
100%
Causes
- Damaged or chafed wiring harness near the exhaust (heat damage)
- Poor or corroded connector at the EGT sensor
- Loose connector or poor pin contact causing intermittent connection
- Failed or intermittently failing EGT sensor (thermocouple/thermistor)
- Intermittent short to ground or short to voltage in the sensor circuit
- Exhaust leaks or soot/contamination affecting sensor operation
Symptoms
- Check Engine Light (MIL) illuminated, intermittent
- Erratic EGT readings or no valid EGT data for Bank 2 Sensor 1 on a scan tool
- Reduced DPF regen control or protective limp mode (diesel applications)
- Possible performance changes or sporadic fault-related derate
- Diagnostic trouble codes stored related to EGT or exhaust treatment systems
What to check
- Read and record freeze-frame and scan-tool live data for EGT Bank 2 Sensor 1
- Inspect the sensor connector and wiring harness from the sensor back toward the engine/ECM for heat damage, chafing, or corrosion
- Wiggle test harness/connectors while monitoring live data to reproduce intermittent behavior
- Check for exhaust leaks near the sensor that could affect measurements
- Retrieve related codes and monitor other sensors (EGT Bank 1, O2 sensors, coolant/air temps) to identify patterns
Signal parameters
- Sensor type: thermocouple (mV) or thermistor/resistance (ohms) depending on vehicle—check service manual for exact type
- Expected behavior: steady, proportional change with exhaust temperature during warm-up and load; no sudden drops/spikes
- Intermittent fault indicators: sudden signal loss, rapid voltage/mV fluctuations, or open-circuit readings (infinite resistance) when probed
- Typical monitored ranges: EGT sensors can measure from ambient to several hundred degrees C (common ranges up to 800–1,000°C for diesel EGTs). Exact mV/ohm values are manufacturer-specific—consult service data.
Diagnostic algorithm
- Connect a scan tool and record freeze-frame and live EGT data for Bank 2 Sensor 1. Note operating conditions when the code set.
- Visually inspect the EGT sensor and wiring from the sensor to the harness junction: look for heat melting, chafing, rodent damage, or crushed wires.
- Perform a wiggle test: with the engine running and monitoring the EGT reading, gently manipulate the harness and connector to try to reproduce the intermittent signal; inspect connector pins for looseness or corrosion.
- Backprobe the sensor connector and monitor voltage (thermocouple mV or sensor voltage) or resistance per manufacturer spec while warming the engine. Look for intermittent drops to open/short.
- If the sensor is a thermocouple, measure output with a digital multimeter or oscilloscope while the exhaust warms; confirm mV output increases smoothly with temperature. For thermistors, measure resistance vs temperature and compare to spec.
- Check continuity of the sensor circuit to the ECU and inspect for shorts to ground or battery voltage. Repair any damaged wiring or replace connector terminals as needed.
- Repair or replace the sensor if wiring and connectors test good but the signal remains intermittent. Use OE-equivalent sensor and correct routing/heat protection.
- Clear codes and perform a road test under the same conditions that originally set the fault; monitor live data to verify the issue is resolved and that the code does not return.
- If intermittent continues after sensor/harness replacement, test/replace the engine control module only after confirming wiring and grounds are good.
Likely causes
- Heat-damaged wiring or insulation failure near exhaust (most common)
- Corroded/loose sensor connector at Bank 2 Sensor 1
- Sensor element degradation or intermittent internal open
- Intermittent short to ground caused by chafed wire contacting exhaust or chassis
Fault status
Status
Exhaust Gas Temperature Sensor Circuit Intermittent - Bank 2 Sensor 1
Repair difficulty: Medium
Diagnostic time: 0.5-2.5 hours
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Code
P2083
LAND ROVER
P — Powertrain
Intermittent circuit of the exhaust gas temperature sensor - bank 2, sensor 1
Views:
UK: 8
EN: 19
RU: 14
AI status
Completed
Completed
100%
Causes
- Damaged or chafed wiring harness near the exhaust (heat damage)
- Poor or corroded connector at the EGT sensor
- Loose connector or poor pin contact causing intermittent connection
- Failed or intermittently failing EGT sensor (thermocouple/thermistor)
- Intermittent short to ground or short to voltage in the sensor circuit
- Exhaust leaks or soot/contamination affecting sensor operation
Symptoms
- Check Engine Light (MIL) illuminated, intermittent
- Erratic EGT readings or no valid EGT data for Bank 2 Sensor 1 on a scan tool
- Reduced DPF regen control or protective limp mode (diesel applications)
- Possible performance changes or sporadic fault-related derate
- Diagnostic trouble codes stored related to EGT or exhaust treatment systems
What to check
- Read and record freeze-frame and scan-tool live data for EGT Bank 2 Sensor 1
- Inspect the sensor connector and wiring harness from the sensor back toward the engine/ECM for heat damage, chafing, or corrosion
- Wiggle test harness/connectors while monitoring live data to reproduce intermittent behavior
- Check for exhaust leaks near the sensor that could affect measurements
- Retrieve related codes and monitor other sensors (EGT Bank 1, O2 sensors, coolant/air temps) to identify patterns
Signal parameters
- Sensor type: thermocouple (mV) or thermistor/resistance (ohms) depending on vehicle—check service manual for exact type
- Expected behavior: steady, proportional change with exhaust temperature during warm-up and load; no sudden drops/spikes
- Intermittent fault indicators: sudden signal loss, rapid voltage/mV fluctuations, or open-circuit readings (infinite resistance) when probed
- Typical monitored ranges: EGT sensors can measure from ambient to several hundred degrees C (common ranges up to 800–1,000°C for diesel EGTs). Exact mV/ohm values are manufacturer-specific—consult service data.
Diagnostic algorithm
- Connect a scan tool and record freeze-frame and live EGT data for Bank 2 Sensor 1. Note operating conditions when the code set.
- Visually inspect the EGT sensor and wiring from the sensor to the harness junction: look for heat melting, chafing, rodent damage, or crushed wires.
- Perform a wiggle test: with the engine running and monitoring the EGT reading, gently manipulate the harness and connector to try to reproduce the intermittent signal; inspect connector pins for looseness or corrosion.
- Backprobe the sensor connector and monitor voltage (thermocouple mV or sensor voltage) or resistance per manufacturer spec while warming the engine. Look for intermittent drops to open/short.
- If the sensor is a thermocouple, measure output with a digital multimeter or oscilloscope while the exhaust warms; confirm mV output increases smoothly with temperature. For thermistors, measure resistance vs temperature and compare to spec.
- Check continuity of the sensor circuit to the ECU and inspect for shorts to ground or battery voltage. Repair any damaged wiring or replace connector terminals as needed.
- Repair or replace the sensor if wiring and connectors test good but the signal remains intermittent. Use OE-equivalent sensor and correct routing/heat protection.
- Clear codes and perform a road test under the same conditions that originally set the fault; monitor live data to verify the issue is resolved and that the code does not return.
- If intermittent continues after sensor/harness replacement, test/replace the engine control module only after confirming wiring and grounds are good.
Likely causes
- Heat-damaged wiring or insulation failure near exhaust (most common)
- Corroded/loose sensor connector at Bank 2 Sensor 1
- Sensor element degradation or intermittent internal open
- Intermittent short to ground caused by chafed wire contacting exhaust or chassis
Fault status
Status
Exhaust Gas Temperature Sensor Circuit Intermittent - Bank 2 Sensor 1
Repair difficulty: Medium
Diagnostic time: 0.5-2.5 hours
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Land Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)
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Your experience will help others
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Was this AI description helpful?
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