P013E

Code

LAND ROVER P — Powertrain

Delayed response from the oxygen sensor - Rich in lean - Bank 1 - Sensor 2

Brand: LAND ROVER

Type: P — Powertrain

Views: UK: 28 EN: 40 RU: 40

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Page language: EN

Causes

Worn or contaminated Bank 1 Sensor 2 (downstream O2 sensor)
Damaged wiring, corroded connector or poor ground to the sensor
Heater circuit failure (open fuse, relay, wiring)
Exhaust leak upstream of the sensor
Degraded catalytic converter reducing expected downstream response
Fuel system issues causing slow/abnormal transitions (rich/lean)

Symptoms

Check Engine / MIL illuminated
Possible failed emissions test
Reduced fuel economy or drivability complaints (hesitation, stumble) — may be subtle
No obvious sensor heater light but downstream sensor shows sluggish voltage changes in live data

What to check

Retrieve freeze frame and stored live data for the event
Inspect sensor connector and wiring for corrosion, breaks, rubbing or heat damage
Check for related codes (upstream sensor, heater, fuel trim, catalyst codes)
Visually inspect exhaust for leaks or damage upstream of the downstream sensor
Monitor live stream: compare Bank1 Sensor1 (upstream) vs Bank1 Sensor2 (downstream) during a snap throttle and steady state
Check sensor heater fuse/relay and measure heater circuit resistance and supply voltage

Signal parameters

Typical narrowband O2 voltage range ~0.1–0.9 V (upstream swings rapidly; downstream should be steadier but still respond to changes)
Upstream sensor: rapid switching several times per second during closed loop; downstream sensor should show smaller, quicker changes following catalyst behavior
Slow response is indicated when downstream sensor voltage changes are delayed or damped compared with upstream during rich→lean and lean→rich transitions

Diagnostic algorithm

Connect a qualified scan tool, confirm P013E and note freeze frame/live data. Look for related O2, heater, fuel trim or catalyst codes.
Visually inspect Bank 1 Sensor 2 harness, connector and PCM connector for damage, corrosion or heat damage. Repair as needed.
Verify heater circuit: check fuse/relay, supply voltage at connector with ignition on, measure heater resistance per factory spec. Repair wiring/heater faults.
Backprobe the signal wire and monitor voltage while performing snap throttle and steady throttle cycles. Compare timing and amplitude to Bank1 Sensor1. Note delayed/damped response.
Check for exhaust leaks upstream of the sensor that could affect readings; repair if found.
Check short‑ and long‑term fuel trims for signs of fuel system problems that could cause slow transitions.
If wiring and heater are good and downstream still slow, consider catalytic converter degradation (inspect temperature profile or backpressure) or replace the downstream O2 sensor and retest.
After repairs, clear codes and perform a drive cycle to verify the fault does not return.

Likely causes

Aging/contaminated downstream O2 sensor
Open/short/corroded sensor harness or connector
Failed heater element or supply/ground problem
Exhaust leak or catalyst damage reducing sensor signal change

Fault status

⚠️ Status

Delayed response from oxygen sensor (Bank 1, Sensor 2). PCM detected a slow or damped voltage transition when exhaust conditions changed from rich to lean. May affect emission control diagnostics.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours

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P013E — Delayed response from the oxygen sensor - Rich in lean - Bank 1 - Sensor 2